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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		*	*	*	*	*	*	0	*
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		110	*	*	*	250	58.9	5	5
2002		89	290	*	480	570	136	24	5
2001		85	290	*	430	640	127	27	3
2000		65	200	271	490	670	167	28	3
1999		69	290	297	440	950	165	28	3
1998		130	260	408	570	2100	463	25	3
1997		41	240	*	430	910	169	28	3
1996		100	280	273	440	520	123	30	3
1995		62	240	280	490	910	195	30	3
1994		80	310	295	480	540	130	29	3
1993		88	250	311	610	800	190	29	3
1992		57	300	286	390	500	98.9	31	3
1991		81	370	432	850	1300	323	29	3
1990		150	480	*	660	830	192	15	3
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.