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	Annual Toxics Summary Roseville-N Sunrise Blvd FAQs Methyl Chloroform parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		0.005	0.005	*	0.005	0.005	0.000	20	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	*	*	*	0.005	0.000	7	0.01
2019		0.005	0.005	0.005	0.005	0.005	0.000	30	0.01
2018		0.005	0.005	0.005	0.005	0.005	0.000	31	0.01
2017		0.005	0.005	0.005	0.005	0.005	0.000	30	0.01
2016		0.005	0.005	0.008	0.005	0.06	0.011	31	0.01
2015		0.005	0.005	0.007	0.005	0.05	0.008	30	0.01
2014		0.005	0.005	0.005	0.005	0.005	0.000	29	0.01
2013		0.005	0.005	0.006	0.005	0.02	0.003	31	0.01
2012		0.005	0.005	0.005	0.005	0.005	0.000	30	0.01
2011		0.005	0.005	0.006	0.01	0.02	0.004	31	0.01
2010		0.005	0.005	0.006	0.01	0.01	0.002	29	0.01
2009		0.005	0.01	0.008	0.01	0.01	0.002	31	0.01
2008		0.005	0.01	0.010	0.01	0.01	0.001	31	0.01
2007		0.01	0.01	0.014	0.02	0.02	0.005	30	0.01
2006		0.01	0.02	0.020	0.02	0.03	0.003	30	0.01
2005		0.02	0.02	0.020	0.02	0.02	0.000	31	0.01
2004		0.02	0.02	0.025	0.03	0.04	0.006	30	0.01
2003		0.03	0.03	0.034	0.04	0.07	0.008	31	0.01
2002		0.03	0.04	0.040	0.04	0.07	0.007	30	0.01
2001		0.03	0.04	0.043	0.05	0.06	0.009	29	0.01
2000		0.04	0.05	0.066	0.11	0.13	0.028	28	0.01
1999		0.05	0.05	*	0.06	0.06	0.005	11	0.01
1998		0.04	0.05	*	0.08	0.08	0.011	16	0.01
1997		0.05	0.08	0.089	0.14	0.36	0.060	29	0.01
1996		0.06	0.09	0.105	0.13	0.41	0.062	30	0.01
1995		0.08	0.15	0.189	0.21	1.1	0.177	30	0.01
1994		0.07	0.14	0.162	0.26	0.37	0.073	31	0.01
1993		0.14	0.23	*	0.31	0.43	0.067	23	0.01
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.