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Annual Statewide Toxics Summary
Barium
FAQs
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
9.5
37
*
73
140
26.5
86
19
2002
9.5
41
50.8
100
230
37.8
491
19
2001
12.5
36
44.9
93
890
50.9
505
25
2000
12.5
39
45.6
92
420
38.3
472
25
1999
12.5
31
43.3
87
1400
73.5
565
25
1998
12.5
28
34.8
72
520
34.0
561
25
1997
12.5
29
33.3
68
230
26.4
557
25
1996
12.5
26
31.4
64
210
24.2
595
25
1995
12.5
26
34.5
83
190
30.9
602
25
1994
12.5
27
32.9
65
280
28.2
585
25
1993
12.5
29
37.6
80
280
31.7
575
25
1992
12.5
12.5
31.7
69
510
39.6
554
25
1991
12.5
12.5
26.7
57
180
26.3
567
25
1990
12.5
12.5
*
62
540
40.9
309
25
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.
