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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		0.78	0.78	*	2.3	4.9	1.00	21	1.56
2022		0.78	2.1	2.51	5.1	7.2	1.89	30	1.56
2021		0.78	2.1	*	5.8	9.5	2.25	24	1.56
2020		0.78	*	*	*	5.3	1.37	9	1.56
2019		0.78	2.2	2.52	4.5	6.6	1.52	34	1.56
2018		0.78	2.4	2.97	4.8	13.7	2.71	37	1.56
2017		0.78	2.0	2.26	3.1	6.6	1.46	33	1.56
2016		0.78	2.1	*	4.5	6.9	1.65	33	1.56
2015		0.78	0.78	1.66	4.1	5.7	1.40	33	1.56
2014		1	1	*	4.2	5.1	1.44	16	2.0
2013		0.8	0.8	*	0.8	3.4	0.59	21	1.6
2012		1.5	1.5	2.03	4.0	5.3	1.04	29	3.0
2011		1.5	*	*	*	1.5	0.00	7	3.0
2010		1.5	1.5	1.50	1.5	1.5	0.00	28	3.0
2009		1.5	1.5	1.56	1.5	3.7	0.41	29	3.0
2008		*	*	*	*	*	*	0	*
2007		0.75	0.75	*	0.75	2.2	0.41	22	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		2.5	*	*	*	2.5	0.00	5	5.0
2002		2	2	3.84	7.0	12	2.60	36	4.0
2001		2	2	3.54	7.0	11	2.31	39	4.0
2000		2	2	2.30	4.0	6.0	1.05	40	4.0
1999		2	2	2.18	2	5.0	0.57	39	4.0
1998		2	2	2.62	5.0	7.0	1.36	42	4.0
1997		2	2	2.00	2	2	0.00	34	4.0
1996		2	2	2.00	2	2	0.00	36	4.0
1995		2	2	2.11	2	4.0	0.51	30	4.0
1994		2	2	*	4.6	7.0	1.41	25	4.0
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.