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	Annual Toxics Summary Azusa FAQs Methyl Bromide parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		*	*	*	*	*	*	0	*
2022		0.015	0.015	*	0.015	0.015	0.000	22	0.03
2021		0.015	0.015	*	0.015	0.015	0.000	24	0.03
2020		0.015	*	*	*	0.20	0.070	7	0.03
2019		0.015	0.015	0.015	0.015	0.015	0.000	30	0.03
2018		0.015	0.015	0.015	0.015	0.015	0.000	31	0.03
2017		0.015	0.015	0.015	0.015	0.015	0.000	30	0.03
2016		0.015	0.015	0.023	0.05	0.08	0.021	30	0.03
2015		0.015	0.015	0.017	0.03	0.04	0.007	30	0.03
2014		0.015	0.015	0.020	0.04	0.05	0.011	29	0.03
2013		0.015	0.015	0.015	0.015	0.015	0.000	31	0.03
2012		0.015	0.015	0.020	0.05	0.06	0.014	30	0.03
2011		0.015	0.015	0.015	0.015	0.015	0.000	30	0.03
2010		0.015	0.015	0.018	0.015	0.04	0.008	24	0.03
2009		0.015	0.015	0.018	0.015	0.06	0.009	31	0.03
2008		0.015	0.015	*	0.015	0.07	0.011	28	0.03
2007		0.015	0.015	0.019	0.03	0.05	0.009	27	0.03
2006		0.015	0.015	0.022	0.04	0.06	0.013	29	0.03
2005		0.015	0.015	0.026	0.05	0.07	0.017	29	0.03
2004		0.015	0.015	0.036	0.07	0.21	0.041	29	0.03
2003		0.015	0.015	0.036	0.08	0.16	0.035	28	0.03
2002		0.015	0.03	0.041	0.10	0.14	0.037	27	0.03
2001		*	*	*	*	*	*	0	*
2000		*	*	*	*	*	*	0	*
1999		*	*	*	*	*	*	0	*
1998		*	*	*	*	*	*	0	*
1997		*	*	*	*	*	*	0	*
1996		*	*	*	*	*	*	0	*
1995		*	*	*	*	*	*	0	*
1994		*	*	*	*	*	*	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.