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	Annual Toxics Summary Calexico-Ethel Street FAQs Methyl Chloroform parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		0.005	0.005	*	0.005	0.005	0.000	15	0.01
2023		0.005	0.005	0.005	0.005	0.005	0.000	30	0.01
2022		0.005	0.005	0.005	0.005	0.005	0.000	31	0.01
2021		0.005	0.005	*	0.005	0.005	0.000	23	0.01
2020		0.005	*	*	*	0.03	0.009	7	0.01
2019		0.005	0.02	0.018	0.03	0.05	0.009	28	0.01
2018		0.005	0.02	0.028	0.05	0.16	0.033	28	0.01
2017		0.005	0.02	0.051	0.08	0.26	0.050	29	0.01
2016		0.005	0.02	0.030	0.05	0.28	0.049	30	0.01
2015		0.01	0.02	0.032	0.05	0.20	0.035	30	0.01
2014		0.005	0.02	1.58	6.44	9.7	3.01	29	0.01
2013		0.94	6.2	5.84	7.9	9.2	2.01	31	0.01
2012		1.4	4.8	4.81	6.32	9.3	1.60	29	0.01
2011		0.42	5.3	4.72	6.9	7.4	1.94	31	0.01
2010		0.02	0.03	*	6.62	7.7	2.81	19	0.01
2009		0.01	0.02	0.050	0.08	0.37	0.072	31	0.01
2008		0.02	0.03	0.051	0.10	0.30	0.065	29	0.01
2007		0.02	0.03	0.044	0.09	0.31	0.056	28	0.01
2006		0.02	0.03	0.050	0.08	0.35	0.076	31	0.01
2005		0.02	0.03	0.042	0.06	0.21	0.036	30	0.01
2004		0.03	0.04	0.042	0.06	0.09	0.016	30	0.01
2003		0.04	0.05	0.149	0.34	1.2	0.297	30	0.01
2002		0.04	0.05	0.056	0.06	0.30	0.047	30	0.01
2001		0.04	0.06	0.068	0.12	0.20	0.035	31	0.01
2000		0.05	0.07	0.093	0.12	0.47	0.081	31	0.01
1999		0.05	0.08	*	1.0	1.6	0.492	14	0.01
1998		0.03	0.06	*	0.28	0.60	0.145	26	0.01
1997		0.05	0.10	0.124	0.18	0.67	0.117	30	0.01
1996		0.06	0.11	0.146	0.29	0.41	0.099	30	0.01
1995		0.11	0.17	*	0.69	7.2	2.02	12	0.01
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.