Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1001 - Chomutov
Code:CZCVCMCHO
Institution:Czech Hydrometeorological Institute
Region:Ustecky
District:Chomutov
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 17 18 70 127 168 61 34 113 111 122 106 94 43 42 42 49 57 61 47 22 36 39 63 44 26 17 16 15 18 72 69 58.63 167.64 31.00
2 53 95 73 76 139 62 36 25 25 17 20 16 33 40 54 32 60 40 28 25 28 38 14 16 58 32 28 35 ~ ~ ~ 42.77 139.34 28.00
3 35 25 24 69 103 55 17 40 33 45 63 98 75 22 38 36 29 76 28 24 23 15 10 9 20 21 34 54 59 46 38 40.70 102.60 31.00
4 44 ~ 23 32 22 15 36 51 34 25 24 27 25 16 33 37 39 51 21 16 17 32 24 22 38 29 16 29 45 28 ~ 29.32 51.49 29.00
5 20 19 16 19 20 23 30 23 19 23 19 17 33 27 23 27 25 27 22 24 20 8.03 6.72 23 15 20 23 19 16 25 20 20.97 32.75 31.00
6 14 16 27 35 20 20 29 21 28 19 32 34 26 26 25 18 30 28 32 23 24 20 17 22 22 24 25 13 14 20 ~ 23.54 35.10 30.00
7 31 37 18 20 21 22 35 22 26 19 27 29 19 13 ~ ~ 23 14 17 22 18 20 32 21 22 35 24 25 29 26 29 24.05 37.31 29.00
8 33 20 25 20 23 38 18 25 33 20 20 14 12 18 16 18 22 28 30 27 30 39 36 25 36 24 27 41 31 34 15 25.79 41.43 31.00
9 31 32 39 47 41 37 24 46 38 24 26 33 41 13 12 26 20 30 47 38 30 27 24 16 33 29 16 24 42 70 ~ 31.86 69.96 30.00
10 70 63 66 26 19 15 21 24 27 43 36 29 32 76 64 70 36 34 41 42 67 141 60 70 46 15 19 16 54 56 45 45.93 140.77 31.00
11 52 29 24 33 48 44 52 46 20 37 64 90 105 87 135 107 76 116 24 50 47 67 68 39 88 121 86 40 38 36 ~ 62.21 135.18 30.00
12 52 46 74 106 54 37 47 63 66 55 94 43 82 36 33 73 90 42 127 87 96 68 54 27 27 23 30 53 48 47 42 58.80 127.20 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. 36 35 11 7 1 0 0 0 90 54 19 8 1 0 0 0 168
REL. 40.0 38.8 12.2 7.7 1.1 0.0 0.0 0.0 100.0 60.0 21.1 8.9 1.1 0.0 0.0 0.05.1
ID 40 38 12 15 5 0 0 0 112
ABS. 78 12 0 0 0 0 0 0 90 12 0 0 0 0 0 0 51
REL. 86.6 13.3 0.0 0.0 0.0 0.0 0.0 0.0 100.0 13.3 0.0 0.0 0.0 0.0 0.0 0.0 8.4
ID 86 13 0 0 0 0 0 0 100
ABS. 70 19 1 0 0 0 0 0 90 20 1 0 0 0 0 0 70
REL. 77.7 21.1 1.1 0.0 0.0 0.0 0.0 0.0100.0 22.2 1.1 0.0 0.0 0.0 0.0 0.0 30.9
ID 77 21 1 0 0 0 0 0 100
ABS. 21 44 19 8 0 0 0 0 92 71 27 8 0 0 0 0 141
REL 22.8 47.8 20.6 8.6 0.0 0.0 0.0 0.0100.0 77.2 29.3 8.7 0.0 0.0 0.0 0.022.10
ID 22 47 20 17 0 0 0 0 108
Year
ABS. 205 110 31 15 1 0 0 0 362 157 47 16 1 0 0 0 168
REL. 56.6 30.3 8.5 4.1 0.2 0.0 0.0 0.0100.0 43.4 13.0 4.4 0.3 0.0 0.0 0.0 5.1
ID 56 30 8 8 1 0 0 0 105

Note:

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