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	Annual Toxics Summary Rosarito FAQs Methyl Chloroform parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		*	*	*	*	*	*	0	*
2022		*	*	*	*	*	*	0	*
2021		*	*	*	*	*	*	0	*
2020		*	*	*	*	*	*	0	*
2019		*	*	*	*	*	*	0	*
2018		*	*	*	*	*	*	0	*
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		*	*	*	*	*	*	0	*
2013		*	*	*	*	*	*	0	*
2012		*	*	*	*	*	*	0	*
2011		*	*	*	*	*	*	0	*
2010		0.005	0.005	*	0.01	0.02	0.005	13	0.01
2009		0.005	0.01	*	0.01	0.01	0.003	14	0.01
2008		0.01	*	*	*	1.0	0.374	7	0.01
2007		0.01	*	*	*	0.02	0.005	10	0.01
2006		0.02	0.02	*	0.02	0.04	0.005	15	0.01
2005		0.02	0.02	0.020	0.02	0.02	0.000	28	0.01
2004		0.02	0.02	0.025	0.03	0.03	0.005	29	0.01
2003		0.03	0.03	0.032	0.04	0.04	0.004	30	0.01
2002		0.03	0.04	*	0.04	0.05	0.003	27	0.01
2001		0.04	0.04	*	0.05	0.07	0.007	24	0.01
2000		0.04	0.05	*	0.10	0.11	0.023	19	0.01
1999		0.04	0.05	*	0.06	0.06	0.008	16	0.01
1998		0.03	0.05	*	0.07	0.38	0.070	24	0.01
1997		0.01	0.06	*	0.10	0.14	0.027	22	0.01
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.