Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1001 - Chomutov
Code:CZCVCMCHO
Institution:CHMI
Region:Severocesky
District:Chomutov
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 92 65 24 17 22 26 38 20 36 91 83 118 109 107 85 107 26 46 36 30 17 28 29 35 60 131 157 81 66 52 28 60.06 157.24 31.00
2 51 72 55 101 138 100 75 33 86 109 61 18 26 32 19 31 28 72 72 97 106 104 39 53 42 53 33 16 ~ ~ ~ 61.52 138.29 28.00
3 20 26 36 26 14 30 18 12 21 30 42 32 22 15 43 25 24 22 20 20 15 18 31 32 60 53 39 38 58 61 107 32.55 106.63 31.00
4 53 46 59 30 ~ 43 33 37 36 32 28 15 16 35 45 54 33 22 34 40 38 53 35 26 30 26 22 25 19 20 ~ 33.97 58.67 29.00
5 19 18 15 15 20 34 38 27 27 38 34 32 36 28 25 15 19 18 18 19 18 14 13 25 29 38 37 26 20 23 27 24.69 38.09 31.00
6 26 30 25 32 25 24 18 26 26 23 28 20 16 23 24 19 20 23 22 17 22 18 21 21 20 24 27 16 25 24 ~ 22.78 32.33 30.00
7 22 23 20 12 10 14 19 16 18 19 15 22 22 23 28 26 24 17 24 31 20 37 24 20 19 30 27 20 30 28 22 21.97 36.75 31.00
8 21 15 26 20 22 18 20 16 21 24 28 25 24 24 23 25 34 19 26 32 30 13 19 18 19 32 19 17 14 21 40 22.67 39.90 31.00
9 44 30 26 24 20 28 34 45 38 38 22 24 28 26 21 37 36 20 30 31 33 39 50 69 57 56 64 54 58 39 ~ 37.28 69.20 30.00
10 35 43 24 27 37 46 48 49 49 24 32 34 27 37 59 61 37 34 60 56 57 68 81 42 28 31 35 19 20 20 28 40.24 81.18 31.00
11 20 54 49 37 36 39 83 82 115 133 36 78 49 43 41 43 24 46 36 24 48 75 159 188 79 103 112 105 44 73 ~ 68.47 188.38 30.00
12 40 79 48 58 22 15 21 67 149 238 61 94 35 77 88 29 162 223 32 21 24 82 88 50 34 26 77 62 66 34 19 68.42 238.22 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. 41 25 12 11 1 0 0 0 90 49 24 12 1 0 0 0 157
REL. 45.5 27.7 13.3 12.2 1.1 0.0 0.0 0.0 100.0 54.4 26.7 13.3 1.1 0.0 0.0 0.027.1
ID 45 27 13 24 5 0 0 0 116
ABS. 69 21 0 0 0 0 0 0 90 21 0 0 0 0 0 0 59
REL. 76.6 23.3 0.0 0.0 0.0 0.0 0.0 0.0 100.0 23.3 0.0 0.0 0.0 0.0 0.0 0.0 3.4
ID 76 23 0 0 0 0 0 0 100
ABS. 73 18 1 0 0 0 0 0 92 19 1 0 0 0 0 0 69
REL. 79.3 19.5 1.0 0.0 0.0 0.0 0.0 0.0100.0 20.7 1.1 0.0 0.0 0.0 0.0 0.0 24.9
ID 79 19 1 0 0 0 0 0 100
ABS. 23 42 16 6 3 2 0 0 92 69 27 11 5 2 0 0 238
REL 25.0 45.6 17.3 6.5 3.2 2.1 0.0 0.0100.0 75.0 29.3 12.0 5.4 2.2 0.0 0.010.12
ID 25 45 17 13 16 54 0 0 171
Year
ABS. 206 106 29 17 4 2 0 0 364 158 52 23 6 2 0 0 238
REL. 56.5 29.1 7.9 4.6 1.0 0.5 0.0 0.0100.0 43.4 14.3 6.3 1.6 0.5 0.0 0.010.12
ID 56 29 7 9 5 13 0 0 122

Note:

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