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California Air Resources Board

Annual Statewide Toxics Summary		 ARB's ADAM Air Quality Database
Benzo(b)fluoranthene
nanograms per cubic meter
Year Months
Present		 Minimum Median Mean 90th
Percentile		 Maximum Standard
Deviation		 Number of
Observations		 Detection
Limit		 Estimated
Risk
2002
0.025 0.05 0.179 0.43 3.3 0.351 474 0.05 0.02
2001
0.025 0.06 0.205 0.50 7.6 0.555 486 0.05 0.02
2000
0.025 0.06 0.199 0.50 4.5 0.434 506 0.05 0.02
1999
0.025 0.08 0.225 0.51 4.2 0.422 592 0.05 0.02
1998
0.025 0.08 0.231 0.59 4.5 0.455 603 0.05 0.03
1997
0.025 0.07 0.241 0.50 7.1 0.547 575 0.05 0.03
1996
0.025 0.07 0.185 0.48 2.8 0.333 452 0.05 0.02
1995
0.025 0.11 0.241 0.59 3.1 0.373 448 0.05 0.03
1994
0.025 0.36   1.2 5.5 0.679 264 0.05  
1993
0.025 0.15 0.480 1.3 5.1 0.765 455 0.05 0.05
1992
0.025 0.12 0.373 1.0 6.6 0.710 456 0.05 0.04
1991
0.025 0.15 0.422 1.0 5.3 0.730 451 0.05 0.05
1990
0.025 0.16 0.627 1.5 22 1.48 447 0.05 0.07
1989
0.025 0.15   2.12 18 2.18 329 0.05  
Graph It!
Notes:  Values below the Limit of Detection (LoD) assumed to be ½ LoD.
Means and risks shown only for years with data in all 12 months.
Risks shown only for those substances with unit risk factors.