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	Annual Toxics Summary Bakersfield-5558 California Avenue FAQs Strontium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		2.0	10.6	13.1	25.4	32.1	8.39	28	0.37
2023		0.65	12	12.4	21.4	32.3	7.11	31	1.3
2022		3.0	15.6	21.6	27.8	262	46.1	30	1.3
2021		1.4	17.6	*	37.6	49.3	11.8	24	1.3
2020		0.65	*	*	*	20.9	6.39	9	1.3
2019		2.1	12	13.7	26.4	34.2	8.44	34	1.3
2018		1.6	14.5	15.4	29.1	41.3	10.1	37	1.3
2017		0.65	10.7	13.0	21.4	30.3	6.81	33	1.3
2016		2.5	16	*	28.3	35.6	8.75	33	1.3
2015		0.65	13.8	13.8	22.5	58.9	10.4	33	1.3
2014		0.6	17	*	36	75	17.7	16	1.2
2013		6.3	13	*	18	32	6.66	21	1.5
2012		2.9	11	12.2	21.8	28	6.86	32	1.5
2011		0.75	9.0	*	21.6	27	7.87	29	1.5
2010		1.7	6.5	*	18	23	5.85	26	1.5
2009		2.5	10	10.8	15.2	36	6.42	29	1.5
2008		*	*	*	*	*	*	0	*
2007		1.7	12	10.4	17.1	27	5.68	30	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		7.0	*	*	*	11	1.82	5	1.0
2002		4.0	16	18.3	29	38	8.64	36	1.0
2001		1	13	13.9	22.6	30	7.53	39	2.0
2000		2.0	15	15.0	22.2	32	7.16	40	2.0
1999		1	14	16.1	31	39	9.69	39	2.0
1998		3.0	13.5	15.7	29	48	11.3	42	2.0
1997		3.0	16.5	16.1	25.4	36	8.68	34	2.0
1996		1	12	12.9	25.5	38	9.50	36	2.0
1995		1	15.5	16.9	32.2	36	10.6	30	2.0
1994		3.0	18	*	30.2	41	9.44	25	2.0
1993		*	*	*	*	*	*	0	*
1992		*	*	*	*	*	*	0	*
1991		*	*	*	*	*	*	0	*
1990		*	*	*	*	*	*	0	*
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.