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	Annual Toxics Summary Stockton-Hazelton Street FAQs Calcium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		*	*	*	*	*	*	0	*
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		230	*	*	*	1300	453	5	4
2002		22	960	1010	1600	2800	632	35	4
2001		190	610	847	1400	2800	587	35	3
2000		100	710	801	1400	2200	467	33	3
1999		190	780	818	1400	2400	474	31	3
1998		190	720	822	1400	3200	627	31	3
1997		70	960	977	1500	2800	577	29	3
1996		130	830	784	1400	2100	469	32	3
1995		140	660	*	1700	3300	784	27	3
1994		140	960	955	1600	2100	524	34	3
1993		200	840	1110	1800	4000	840	31	3
1992		180	960	922	1400	2100	490	30	3
1991		42	880	1020	2100	3200	829	31	3
1990		410	1400	*	2400	2800	738	17	3
1989		*	*	*	*	*	*	0	*

	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.