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	Annual Toxics Summary Roseville-N Sunrise Blvd FAQs Silicon nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
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		940	*	*	*	1900	356	5	2
2002		270	3200	3320	5800	8800	2140	30	2
2001		290	3000	3360	6700	7500	2400	31	3
2000		130	2200	3110	6200	9300	2460	28	3
1999		360	3100	4110	7500	20000	3910	29	3
1998		230	2100	2950	6500	9700	2750	29	3
1997		85	2700	3460	6500	7900	2170	29	3
1996		180	2200	2640	5700	7400	2180	31	3
1995		160	2500	3360	7200	13000	3250	30	3
1994		90	3300	3230	6300	8200	2240	30	3
1993		570	3500	*	6000	10000	2350	24	3
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.