Detailed overview of ambient air pollution valuis from individual stations

1014 - Decin

Year: 1997
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1014 - Decin
Code:CZDCCMDEC
Institution:CHMI
Region:Severocesky
District:Decin
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 82 157 117 49 29 48 76 62 38 79 90 43 91 160 180 216 158 144 68 110 121 29 57 171 143 31 82 103 107 68 32 94.84 215.63 31.00
2 45 56 90 63 86 108 87 100 109 125 61 137 33 75 47 21 28 57 62 80 40 86 94 58 33 26 38 69 ~ ~ ~ 68.39 137.26 28.00
3 84 47 62 92 72 64 83 71 61 96 88 88 69 43 23 24 53 30 76 37 57 33 23 27 44 107 75 14 13 20 37 55.26 106.58 31.00
4 69 68 49 18 32 16 55 54 74 41 20 23 38 49 19 25 52 42 22 32 44 50 44 65 38 34 31 37 44 32 ~ 40.54 73.51 30.00
5 35 52 35 65 62 25 29 24 25 34 33 32 35 47 36 36 33 31 42 39 30 36 28 16 26 26 23 29 22 18 13 32.82 64.80 31.00
6 26 39 37 36 34 27 32 35 36 37 42 46 32 35 24 34 33 29 26 34 24 26 32 40 47 33 34 27 24 37 ~ 33.38 46.94 30.00
7 50 34 38 31 18 16 19 29 27 32 30 27 25 33 44 36 36 27 15 23 34 28 30 30 38 18 24 25 ~ ~ ~ 29.14 49.72 28.00
8 25 23 24 45 38 30 30 28 24 26 31 38 38 53 31 25 31 38 41 50 47 43 39 41 42 39 39 29 35 29 41 35.24 53.50 31.00
9 45 41 35 44 49 38 22 27 18 43 43 54 32 37 56 64 66 69 47 38 35 54 68 57 69 80 48 54 93 87 ~ 50.40 93.17 30.00
10 49 23 53 46 60 78 89 107 74 57 30 33 53 53 81 63 90 81 77 83 65 97 77 43 22 44 89 81 178 140 148 73.00 177.62 31.00
11 99 73 74 50 38 158 246 204 95 132 94 82 57 52 55 28 37 31 53 104 117 92 100 62 62 71 66 72 79 61 ~ 84.88 245.71 30.00
12 63 37 47 44 73 86 62 78 103 110 213 119 32 36 27 43 22 25 49 112 94 125 170 88 96 94 89 84 123 124 109 83.14 213.19 31.00

Quarterly and annual absolute and relative frequency of average daily concentrations
partial and total air pollution indexes according to classes of IHd multiples

Quarter

concentration classes in IHd multiples

total ind.

part of it in IHd multiples

max.
date

<=1/3 <=2/3 <=1.0 <=1.5 <=2.0 <=3.0 <=4.0 > 1/32/31.01.52.0 3.04.0

concentration classes in measurement units

part of above IHd multiples in meas. units

0- 33 34- 67 68- 100 101- 150 151- 200 201- 300 301- 400 over 400 33 67 100 150 200 300 400
ABS. 17 27 28 12 5 1 0 0 90 73 46 18 6 1 0 0 216
REL. 18.8 30.0 31.1 13.3 5.5 1.1 0.0 0.0 100.0 81.1 51.1 20.0 6.7 1.1 0.0 0.016.1
ID 18 30 31 26 27 27 0 0 162
ABS. 43 45 3 0 0 0 0 0 91 48 3 0 0 0 0 0 74
REL. 47.2 49.4 3.2 0.0 0.0 0.0 0.0 0.0 100.0 52.7 3.3 0.0 0.0 0.0 0.0 0.0 9.4
ID 47 49 3 0 0 0 0 0 100
ABS. 38 45 6 0 0 0 0 0 89 51 6 0 0 0 0 0 93
REL. 42.6 50.5 6.7 0.0 0.0 0.0 0.0 0.0100.0 57.3 6.7 0.0 0.0 0.0 0.0 0.0 29.9
ID 42 50 6 0 0 0 0 0 100
ABS. 10 30 31 15 3 3 0 0 92 82 52 21 6 3 0 0 246
REL 10.8 32.6 33.6 16.3 3.2 3.2 0.0 0.0100.0 89.1 56.5 22.8 6.5 3.3 0.0 0.0 7.11
ID 10 32 33 32 16 81 0 0 207
Year
ABS. 108 147 68 27 8 4 0 0 362 254 107 39 12 4 0 0 246
REL. 29.8 40.6 18.7 7.4 2.2 1.1 0.0 0.0100.0 70.2 29.6 10.8 3.3 1.1 0.0 0.0 7.11
ID 29 40 18 14 11 27 0 0 142

Note:

1 frequency < 60 per quarter, or < 240 per annum
2 frequency < 30 per quarter, or < 120 per annum

Detailed overview of ambient air pollution valuis from individual stations - selection station