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California Air Resources Board

Annual Statewide Toxics Summary		 ARB's ADAM Air Quality Database
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nanograms per cubic meter
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 *
2009
* * * * * * 0 *
2008
* * * * * * 0 *
2007
* * * * * * 0 *
2006
* * * * * * 0 *
2005
* * * * * * 0 *
2004
* * * * * * 0 *
2003
120 830 * 2000 5800 1070 86 4
2002
2 1600 1980 4300 8300 1490 491 4
2001
43 1300 1760 3900 7700 1430 505 5
2000
36 1400 1790 4000 8700 1490 472 5
1999
59 1200 1790 4000 10000 1620 565 5
1998
18 960 1390 3300 10000 1430 561 5
1997
31 1100 1480 3100 10000 1420 557 5
1996
17 980 1370 3100 8300 1310 595 5
1995
38 1200 1650 3600 9500 1620 602 5
1994
45 1200 1530 3300 6500 1270 585 5
1993
35 1200 1640 3700 10000 1560 575 5
1992
14 1300 1730 3800 16000 1600 554 5
1991
66 1500 2100 4500 25000 2080 567 5
1990
170 2200 * 5700 11000 2120 309 5
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.