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Annual Toxics Summary
ARB's ADAM Air Quality Database
Simi Valley-Cochran Street FAQs
Calcium
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
250 * * * 2000 822 4 4
2002
340 1100 1080 1800 2500 578 29 4
2001
86 800 * 1600 2000 536 24 3
2000
52 650 * 1100 1200 346 15 3
1999
150 1100 * 1600 1900 526 27 3
1998
41 660 647 1100 1900 415 29 3
1997
77 670 793 1200 3600 624 31 3
1996
31 1000 838 1500 1800 510 29 3
1995
57 740 1010 2000 2400 709 31 3
1994
190 840 * 1500 2200 530 27 3
1993
64 690 837 1500 2900 628 31 3
1992
120 750 * 1400 2100 527 22 3
1991
100 880 943 1500 2100 478 28 3
1990
360 1400 * 2800 4900 1180 16 3
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.