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	Annual Toxics Summary Rosarito FAQs 1,3-Butadiene parts per billion

Read About Estimated Risk

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit	Estimated Risk
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		0.02	0.08	*	0.21	0.29	0.081	13	0.04	*
2009		0.02	0.07	*	0.12	0.16	0.042	14	0.04	*
2008		0.02	*	*	*	0.22	0.072	7	0.04	*
2007		0.04	*	*	*	0.16	0.035	10	0.04	*
2006		0.02	0.11	*	0.27	0.68	0.166	15	0.04	*
2005		0.02	0.10	0.125	0.28	0.37	0.091	28	0.04	135
2004		0.04	0.11	0.122	0.22	0.29	0.067	30	0.04	132
2003		0.02	0.12	0.123	0.22	0.31	0.077	30	0.04	133
2002		0.02	0.10	*	0.28	0.53	0.112	27	0.04	*
2001		0.04	0.13	*	0.22	0.28	0.067	24	0.04	*
2000		0.06	0.14	*	0.26	0.80	0.162	19	0.04	*
1999		0.05	0.13	0.221	0.41	0.77	0.167	30	0.04	239
1998		0.07	0.16	*	0.26	0.46	0.082	28	0.04	*
1997		0.02	0.14	*	0.42	0.54	0.151	24	0.04	*
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.