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	Annual Toxics Summary Fremont-Chapel Way FAQs Phosphorus nanograms per cubic meter

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	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		10	*	*	*	34	10.3	5	2
2002		5	31	*	46	52	13.3	24	2
2001		7.5	38	*	55	62	15.2	27	15
2000		7.5	33	35.2	55	69	17.7	28	15
1999		7.5	36	38.6	57	89	16.6	28	15
1998		22	37	46.8	71	140	25.0	25	15
1997		7.5	18	*	40	100	19.9	28	15
1996		7.5	21	22.4	38	68	15.5	30	15
1995		7.5	7.5	21.8	53	99	23.5	30	15
1994		7.5	7.5	*	7.5	29	5.7	14	15
1993		*	*	*	*	*	*	0	*
1992		1	9	*	16	25	7.2	21	2
1991		1	10	14.8	34	65	17.6	29	2
1990		1	5	*	32	44	14.0	15	2
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.