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Strontium
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
* * * * * * 0 *
2002
* * * * * * 0 *
2001
* * * * * * 0 *
2000
3.0 * * * 7.0 1.79 5 2.0
1999
2.0 7.0 8.07 14.3 20 4.27 28 2.0
1998
3.0 7.0 * 14 37 6.91 25 2.0
1997
3.0 8.0 9.49 15.4 19 4.40 27 2.0
1996
1 6.0 6.96 13 20 4.36 27 2.0
1995
1 7.5 8.15 12.4 28 5.74 30 2.0
1994
2.0 9.0 9.04 14.4 16 4.36 27 2.0
1993
1 9.0 * 12.4 35 6.44 27 2.0
1992
1 7.0 7.51 13.1 17 3.80 30 2.0
1991
1 7.0 8.25 12.2 26 5.19 29 2.0
1990
7.0 16 * 18.5 21 4.75 16 2.0
1989
* * * * * * 0 *
Graph It!
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.