site,date,start_hour,value,variable,units,quality,prelim,name 2133,2013-01-08,0,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,1,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,2,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,4,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,5,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,6,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,7,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,8,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,9,0.0020,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,10,0.0036,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,11,0.0038,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,12,0.0028,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,13,0.0020,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,14,0.0025,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,15,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,16,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,17,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,18,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,19,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,20,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,21,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,22,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-08,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,0,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,1,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,2,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,4,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,5,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,6,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,7,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,9,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,10,0.0023,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,11,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,12,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,13,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,14,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,15,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,16,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,17,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,18,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,20,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,21,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,22,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-09,23,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,0,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,3,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,4,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,5,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,6,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,7,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,8,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,9,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,10,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,11,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,12,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,13,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,14,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,15,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,16,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,17,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,18,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,20,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,21,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,22,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-10,23,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,0,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,2,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,4,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,5,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,6,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,7,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,8,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,9,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,10,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,11,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,12,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,13,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,14,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,15,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,16,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,17,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,18,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,19,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,20,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,21,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,22,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-11,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,0,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,1,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,2,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,4,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,5,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,6,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,7,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,8,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,9,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,10,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,11,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,12,0.0022,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,13,0.0023,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,14,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,15,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,16,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,17,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,18,0.0033,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,19,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,20,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,21,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,22,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-12,23,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,0,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,1,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,2,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,5,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,6,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,7,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,8,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,9,0.0015,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,10,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,11,0.0016,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,12,0.0020,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,13,0.0032,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,14,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,15,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,16,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,17,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,18,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,19,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,20,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,21,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,22,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-13,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,0,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,1,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,2,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,4,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,5,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,6,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,7,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,10,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,11,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,12,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,13,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,14,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,15,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,16,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,17,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,18,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,19,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,20,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,21,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,22,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-14,23,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,0,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,1,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,2,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,4,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,5,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,6,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,7,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,8,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,9,0.0022,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,10,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,11,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,12,0.0016,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,13,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,14,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,15,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,16,0.0020,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,17,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,18,0.0026,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,19,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,20,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,21,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,22,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-15,23,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,0,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,1,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,2,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,4,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,5,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,6,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,7,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,8,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,9,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,10,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,11,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,12,0.0016,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,13,0.0022,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,14,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,15,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,16,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,17,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,18,0.0016,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,19,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,20,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,21,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,22,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-16,23,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,0,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,1,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,3,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,4,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,5,0.0019,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,6,0.0025,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,7,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,8,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,9,0.0015,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,10,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,11,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,12,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,13,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,14,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,15,0.0015,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,16,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,17,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,18,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,19,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,20,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,21,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,22,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-17,23,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,0,0.0030,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,1,0.0033,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,2,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,4,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,5,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,6,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,7,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,8,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,9,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,10,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,11,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,12,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,13,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,14,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,15,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,16,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,17,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,18,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,19,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,20,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,21,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,22,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-18,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,0,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,2,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,4,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,5,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,6,0.0016,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,7,0.0037,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,8,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,9,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,10,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,11,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,12,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,13,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,14,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,15,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,16,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,17,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,18,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,19,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,20,0.0015,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,21,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,22,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-19,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,0,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,2,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,5,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,6,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,7,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,8,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,9,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,10,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,11,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,12,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,13,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,14,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,15,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,16,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,17,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,18,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,19,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,20,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,21,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,22,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-20,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,0,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,2,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,4,0.0019,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,5,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,6,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,7,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,8,0.0024,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,9,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,10,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,11,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,12,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,13,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,14,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,15,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,16,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,17,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,18,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,19,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,20,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,21,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,22,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-21,23,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,0,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,1,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,2,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,4,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,5,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,6,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,7,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,8,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,9,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,10,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,11,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,12,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,13,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,14,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,15,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,16,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,17,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,18,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,19,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,20,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,21,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,22,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-22,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,0,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,1,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,2,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,5,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,6,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,7,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,8,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,9,0.0022,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,10,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,11,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,12,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,13,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,14,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,15,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,16,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,17,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,18,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,19,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,20,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,21,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,22,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-23,23,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,0,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,3,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,5,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,6,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,7,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,8,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,10,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,11,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,12,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,13,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,14,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,15,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,16,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,17,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,18,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,19,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,20,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,21,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,22,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-24,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,0,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,2,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,4,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,5,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,6,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,7,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,8,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,9,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,10,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,11,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,12,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,13,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,14,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,15,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,16,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,17,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,18,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,19,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,20,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,21,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,22,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-25,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,0,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,1,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,2,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,4,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,5,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,6,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,7,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,8,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,9,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,10,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,11,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,12,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,13,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,14,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,15,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,16,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,17,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,18,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,19,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,20,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,21,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,22,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-26,23,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,0,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,1,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,2,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,4,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,5,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,6,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,7,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,8,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,9,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,10,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,11,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,12,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,13,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,14,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,15,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,16,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,17,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,18,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,19,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,20,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,21,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,22,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-27,23,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,0,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,1,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,4,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,5,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,6,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,7,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,8,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,9,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,10,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,11,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,12,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,13,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,14,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,15,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,16,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,17,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,18,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,19,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,20,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,21,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,22,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-28,23,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,0,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,1,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,4,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,5,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,6,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,7,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,11,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,12,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,13,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,14,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,15,0.0022,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,16,0.0025,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,17,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,18,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,19,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,20,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,21,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,22,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-29,23,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,0,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,1,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,4,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,5,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,6,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,7,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,15,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,16,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,17,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,18,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,20,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,21,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,22,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-30,23,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,0,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,1,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,3,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,4,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,5,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,6,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,7,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,9,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,10,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,11,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,12,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,13,0.0021,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,14,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,15,0.0014,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,16,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,17,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,18,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,19,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,20,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,21,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,22,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-01-31,23,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,0,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,2,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,5,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,6,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,7,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,8,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,9,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,10,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,11,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,12,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,13,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,14,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,15,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,16,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,17,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,18,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,19,0.0035,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,20,0.0015,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,21,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,22,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-01,23,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,0,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,1,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,4,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,5,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,6,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,7,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,8,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,9,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,10,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,11,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,12,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,13,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,14,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,15,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,16,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,17,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,18,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,20,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,21,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,22,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-02,23,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,0,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,1,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,2,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,4,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,5,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,6,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,7,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,8,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,9,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,10,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,11,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,12,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,13,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,14,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,15,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,16,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,17,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,18,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,20,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,21,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,22,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-03,23,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,0,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,1,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,4,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,5,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,6,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,7,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,8,0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,9,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,10,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,11,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,12,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,13,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,14,0.0009,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,15,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,16,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,17,0.0000,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,18,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,19,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,20,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,21,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,22,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-04,23,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,0,-0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,1,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,2,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,4,-0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,5,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,6,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,7,-0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,8,-0.0001,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,10,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,11,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,12,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,13,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,14,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,15,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,16,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,17,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,18,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,19,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,20,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,21,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,22,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-05,23,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,0,0.0002,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,1,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,2,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,4,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,5,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,6,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,7,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,8,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,9,0.0026,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,10,0.0037,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,11,0.0031,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,12,0.0017,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,13,0.0012,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,14,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,15,0.0010,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,16,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,17,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,18,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,19,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,20,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,21,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,22,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-06,23,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,0,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,1,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,3,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,4,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,5,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,6,0.0008,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,7,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,8,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,9,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,10,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,11,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,12,0.0011,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,13,0.0007,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,14,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,15,0.0003,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,16,0.0028,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,17,0.0032,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,18,0.0018,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,19,0.0013,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,20,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,21,0.0005,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,22,0.0006,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street 2133,2013-02-07,23,0.0004,SO2,Parts Per Million ( ppm ),,,Richmond-7th Street Quality Flag Definition 0, Valid observation 1, The data supplier marked the observation as suspect - but it is still valid 2, The automated qa routine judged the observation questionable and invalid 3, The automated qa routine judged the observation invalid 4, The data supplier flagged the observation invalid 5, The observation was flagged invalid manually Data extracted from mrgd database: April 18, 2024 at 14:03:26