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Annual Statewide Toxics Summary
Zinc
FAQs
nanograms per cubic meter
Year
Months
Present
Minimum
Median
Mean
90th
Percentile
Maximum
Standard
Deviation
Number of
Observations
Detection
Limit
2023
4.99
27
*
65
365
31.1
246
9.98
2022
4.99
35
46.6
94
289
36.5
390
9.98
2021
4.99
37
*
92
342
46.3
312
9.98
2020
4.99
51
*
120
226
43.5
106
9.98
2019
4.99
34
51.4
110
808
70.0
410
9.98
2018
4.99
39
82.0
110
531
60.6
349
9.98
2017
5
44
58.8
100
1040
76.2
420
10
2016
5
39
58.1
96
866
73.7
424
10
2015
5
40
63.5
100
1490
111
418
10
2014
4.2
29
46.1
87
1000
70.1
398
8.4
2013
2.6
35
*
93
1000
95.6
382
5.2
2012
4.5
33
*
73
350
36.3
335
9
2011
4.5
30
38.8
75
890
56.9
314
9
2010
4.5
33
*
70
250
31.6
242
9
2009
4.5
36
46.5
76
1400
68.4
483
9
2008
*
*
*
*
*
*
0
*
2007
11
41
58.0
100
690
64.3
353
3
2006
*
*
*
*
*
*
0
*
2005
*
*
*
*
*
*
0
*
2004
*
*
*
*
*
*
0
*
2003
9
49
*
99
200
33.7
86
1
2002
2
45
58.1
110
360
42.5
491
1
2001
1
40
54.9
110
890
62.5
505
2
2000
5
42
71.4
110
4800
223
472
2
1999
1
37
50.7
95
310
43.2
565
2
1998
1
37
47.1
93
350
34.5
561
2
1997
4
39
49.0
89
280
36.5
557
2
1996
4
37
52.1
95
610
49.6
595
2
1995
5
41
54.2
110
440
49.0
602
2
1994
5
40
57.5
110
400
51.8
585
2
1993
3
40
51.6
96
340
37.2
575
2
1992
3
39
51.9
99
750
50.4
554
2
1991
3
40
55.0
110
290
43.8
567
2
1990
5
51
*
100
430
46.6
309
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.
