Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1014 - Decin
Code:CZDCCMDEC
Institution:Czech Hydrometeorological Institute
Region:Ustecky
District:Decin
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 30 30 83 61 51 122 71 130 186 119 79 71 66 67 90 89 38 75 53 46 31 43 40 47 69 122 54 81 107 71 49 73.26 186.06 31.00
2 69 51 38 135 179 152 84 99 81 62 108 169 64 69 115 133 29 40 55 43 35 37 54 56 95 132 39 26 ~ ~ ~ 80.22 178.73 28.00
3 105 114 74 81 62 70 46 28 76 55 108 69 79 90 115 95 47 94 52 53 46 88 68 80 38 28 33 24 38 88 83 68.63 114.69 31.00
4 88 107 89 76 79 69 37 26 58 59 44 34 43 37 58 47 62 50 60 44 14 32 69 79 56 60 58 59 60 62 ~ 57.15 107.46 30.00
5 41 34 26 29 13 10 22 23 26 35 20 14 25 21 46 31 36 40 32 24 27 23 23 39 40 33 31 51 31 40 34 29.70 50.82 31.00
6 37 28 17 29 37 49 44 32 19 17 36 44 30 28 26 22 31 24 22 27 45 ~ ~ ~ 39 35 38 35 29 16 ~ 30.95 48.50 27.00
7 22 30 22 20 17 13 10 24 51 46 51 39 35 32 17 26 31 33 25 31 25 16 22 37 33 28 24 18 20 35 37 28.05 51.40 31.00
8 28 26 33 19 26 28 41 49 36 49 28 33 71 45 31 27 34 22 37 27 29 32 30 35 35 33 36 33 34 35 84 35.62 84.15 31.00
9 46 28 44 39 36 42 54 26 22 41 45 67 82 52 42 34 45 59 38 59 63 45 36 66 44 34 84 51 65 76 ~ 48.74 84.50 30.00
10 69 83 71 60 55 57 59 77 70 90 121 65 87 75 96 81 50 48 80 38 63 103 56 41 100 33 22 83 90 95 73 70.62 121.14 31.00
11 31 54 71 55 71 78 71 61 56 54 73 94 67 85 116 126 96 76 88 101 138 57 38 78 71 62 65 146 97 29 ~ 76.85 146.26 30.00
12 28 30 48 57 103 53 36 30 76 141 88 37 42 71 58 36 76 79 70 63 62 58 66 35 53 80 51 69 64 42 38 59.31 141.10 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. 9 32 31 14 4 0 0 0 90 81 49 18 4 0 0 0 186
REL. 10.0 35.5 34.4 15.5 4.4 0.0 0.0 0.0 100.0 90.0 54.4 20.0 4.4 0.0 0.0 0.09.1
ID 10 35 34 31 22 0 0 0 133
ABS. 39 41 7 1 0 0 0 0 88 49 8 1 0 0 0 0 107
REL. 44.3 46.5 7.9 1.1 0.0 0.0 0.0 0.0 100.0 55.7 9.1 1.1 0.0 0.0 0.0 0.0 2.4
ID 44 46 7 2 0 0 0 0 101
ABS. 43 43 6 0 0 0 0 0 92 49 6 0 0 0 0 0 84
REL. 46.7 46.7 6.5 0.0 0.0 0.0 0.0 0.0100.0 53.3 6.5 0.0 0.0 0.0 0.0 0.0 27.9
ID 46 46 6 0 0 0 0 0 100
ABS. 7 38 38 9 0 0 0 0 92 85 47 9 0 0 0 0 146
REL 7.6 41.3 41.3 9.7 0.0 0.0 0.0 0.0100.0 92.4 51.1 9.8 0.0 0.0 0.0 0.028.11
ID 7 41 41 19 0 0 0 0 109
Year
ABS. 98 154 82 24 4 0 0 0 362 264 110 28 4 0 0 0 186
REL. 27.0 42.5 22.6 6.6 1.1 0.0 0.0 0.0100.0 72.9 30.4 7.7 1.1 0.0 0.0 0.0 9.1
ID 27 42 22 13 5 0 0 0 111

Note:

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