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California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Modesto-I Street (Courthouse) FAQs
Sulfur
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
* * * * * * 0 *
2002
* * * * * * 0 *
2001
* * * * * * 0 *
2000
* * * * * * 0 *
1999
* * * * * * 0 *
1998
250 480 * 820 1300 261 20 2
1997
140 490 548 850 1400 274 28 2
1996
110 450 533 870 1000 261 31 2
1995
160 620 597 920 1400 264 29 2
1994
180 480 567 910 1500 301 31 2
1993
210 560 662 1000 1400 267 29 2
1992
320 690 769 1200 1700 368 31 2
1991
150 690 847 1200 3300 634 30 2
1990
110 680 * 1100 1100 280 14 2
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.