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meta/para-Xylene
parts per billion
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2023
* * * * * * 0 *
2022
* * * * * * 0 *
2021
* * * * * * 0 *
2020
* * * * * * 0 *
2019
* * * * * * 0 *
2018
* * * * * * 0 *
2017
* * * * * * 0 *
2016
* * * * * * 0 *
2015
* * * * * * 0 *
2014
* * * * * * 0 *
2013
* * * * * * 0 *
2012
* * * * * * 0 *
2011
* * * * * * 0 *
2010
0.3 0.7 * 1.5 1.5 0.40 13 0.2
2009
0.1 0.4 * 0.7 0.8 0.24 14 0.2
2008
0.1 * * * 0.9 0.32 7 0.2
2007
0.4 * * * 1.2 0.26 10 0.2
2006
0.1 0.5 * 1.5 1.7 0.49 15 0.2
2005
0.2 0.7 0.73 1.4 1.6 0.43 28 0.2
2004
0.4 0.7 0.77 1.2 1.8 0.33 30 0.2
2003
0.3 0.8 0.92 1.3 1.9 0.38 30 0.2
2002
0.3 0.7 * 1.5 2.7 0.56 27 0.2
2001
0.2 0.9 * 1.5 1.7 0.40 24 0.2
2000
0.3 0.9 * 1.4 4.7 0.99 19 0.6
1999
0.3 0.3 0.99 2.4 5.0 1.10 29 0.6
1998
0.3 0.3 * 1.1 2.2 0.48 25 0.6
1997
0.3 0.3 * 1.3 4.8 0.99 22 0.6
1996
* * * * * * 0 *
1995
* * * * * * 0 *
1994
* * * * * * 0 *
1993
* * * * * * 0 *
1992
* * * * * * 0 *
1991
* * * * * * 0 *
1990
* * * * * * 0 *
1989
* * * * * * 0 *
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.
"*" means there was insufficient or no data available to determine the value.