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California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Modesto-I Street (Courthouse) FAQs
Phosphorus
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
25 63 * 93 150 30.1 20 15
1997
7.5 78 79.3 140 170 38.0 28 15
1996
7.5 61 64.8 130 150 41.0 31 15
1995
7.5 37 63.4 180 250 65.1 29 15
1994
7.5 43 * 77 110 30.7 16 15
1993
* * * * * * 0 *
1992
1 27 * 93 100 30.5 21 2
1991
1 39 50.3 110 170 41.2 30 2
1990
4 67 * 160 250 70.9 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.