Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
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 26 25 52 103 187 154 120 104 111 97 82 86 80 73 50 60 70 75 128 94 88 101 88 72 87 49 60 69 101 103 138 88.17 187.20 31.00
2 136 133 89 116 199 55 103 77 53 40 57 32 77 45 79 61 78 79 58 56 46 63 38 37 128 79 93 81 ~ ~ ~ 78.00 199.30 28.00
3 74 39 48 79 88 87 26 66 84 56 93 100 99 24 38 35 33 98 60 60 87 35 20 15 32 33 50 62 72 68 47 58.40 100.05 31.00
4 45 51 50 44 31 22 32 56 47 39 24 23 39 34 95 63 83 77 59 40 34 50 56 53 65 58 40 51 67 79 ~ 50.18 95.42 30.00
5 48 37 41 29 41 45 30 19 25 26 32 32 39 47 38 39 33 17 21 23 24 20 18 46 20 26 25 35 26 31 33 31.17 47.61 31.00
6 28 25 30 38 15 18 36 23 32 33 39 34 36 37 43 23 34 39 28 23 27 24 21 29 29 32 33 27 25 28 ~ 29.60 43.17 30.00
7 44 45 21 42 24 22 17 38 28 28 35 24 18 12 22 23 37 27 21 21 20 36 46 38 46 55 26 20 22 25 20 29.12 55.33 31.00
8 32 27 20 20 25 33 27 30 27 22 17 26 26 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 41 41 30 30 21 27.52 41.20 18.00
9 26 31 31 38 39 44 36 29 39 43 38 30 43 28 45 57 70 59 41 59 36 31 20 16 41 58 30 34 45 61 ~ 39.92 70.32 30.00
10 64 71 111 63 33 27 36 44 26 30 20 20 20 127 74 151 65 80 47 57 97 179 65 96 57 26 31 24 79 115 68 64.65 179.10 31.00
11 86 53 19 43 30 61 ~ 135 35 71 110 161 148 125 175 201 79 207 60 60 46 188 120 34 107 223 122 43 82 73 ~ 99.87 222.79 29.00
12 45 60 73 56 35 28 36 44 ~ 110 152 49 53 61 32 81 87 91 121 104 149 76 41 18 22 24 35 58 154 149 30 69.19 153.63 30.00

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. 10 29 33 15 3 0 0 0 90 80 51 18 3 0 0 0 199
REL. 11.1 32.2 36.6 16.6 3.3 0.0 0.0 0.0 100.0 88.9 56.7 20.0 3.3 0.0 0.0 0.05.2
ID 11 32 36 33 16 0 0 0 130
ABS. 45 41 5 0 0 0 0 0 91 46 5 0 0 0 0 0 95
REL. 49.4 45.0 5.4 0.0 0.0 0.0 0.0 0.0 100.0 50.5 5.5 0.0 0.0 0.0 0.0 0.0 15.4
ID 49 45 5 0 0 0 0 0 100
ABS. 46 32 1 0 0 0 0 0 79 33 1 0 0 0 0 0 70
REL. 58.2 40.5 1.2 0.0 0.0 0.0 0.0 0.0100.0 41.8 1.3 0.0 0.0 0.0 0.0 0.0 17.9
ID 58 40 1 0 0 0 0 0 100
ABS. 18 30 17 15 7 3 0 0 90 72 42 25 10 3 0 0 223
REL 20.0 33.3 18.8 16.6 7.7 3.3 0.0 0.0100.0 80.0 46.7 27.8 11.1 3.3 0.0 0.026.11
ID 20 33 18 33 38 83 0 0 227
Year
ABS. 119 132 56 30 10 3 0 0 350 231 99 43 13 3 0 0 223
REL. 34.0 37.7 16.0 8.5 2.8 0.8 0.0 0.0100.0 66.0 28.3 12.3 3.7 0.9 0.0 0.026.11
ID 34 37 16 17 14 21 0 0 140

Note:

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