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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		19	65	68.2	110	149	36.1	26	0.3
2023		4.99	63	62.8	87	172	33.3	31	9.98
2022		19	70	68.0	110	128	29.7	30	9.98
2021		18	64	*	170	202	50.7	24	9.98
2020		32	*	*	*	226	55.7	9	9.98
2019		18	58	71.4	120	146	36.2	34	9.98
2018		4.99	71	*	130	207	46.5	31	9.98
2017		13	67	77.2	130	200	40.2	33	10
2016		17	60	*	120	181	41.2	33	10
2015		5	55	64.2	140	167	46.0	33	10
2014		16	71	*	130	180	46.4	16	8.4
2013		20	52	*	80	110	25.5	21	5.2
2012		26	47	*	100	130	28.8	25	9
2011		10	33	*	80	130	29.4	27	9
2010		16	36	*	100	130	33.9	15	9
2009		17	46	*	69	120	24.2	26	9
2008		*	*	*	*	*	*	0	*
2007		21	54	*	89	120	24.5	23	3
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		38	*	*	*	60	10.0	5	1
2002		13	44	50.8	79	120	24.1	36	1
2001		9	36	42.9	78	140	26.4	39	2
2000		9	35	42.1	90	170	33.1	40	2
1999		8	42	42.7	73	110	24.3	39	2
1998		6	46	47.4	86	93	23.7	42	2
1997		12	43	45.7	79	100	21.8	34	2
1996		17	36	40.1	62	110	20.6	36	2
1995		11	51	53.2	93	140	32.4	30	2
1994		19	41	*	100	120	28.6	25	2
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.