Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
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 31 34 70 62 86 71 72 89 65 97 67 51 66 98 92 60 33 60 47 37 31 34 42 45 63 90 25 58 41 33 19 56.97 98.27 31.00
2 22 33 45 71 47 79 85 90 54 69 94 126 27 44 91 116 29 17 20 14 17 12 19 26 57 68 52 48 ~ ~ ~ 52.52 125.81 28.00
3 68 74 34 57 33 40 50 41 64 24 25 23 24 28 47 74 50 49 17 23 34 48 52 35 50 23 25 27 30 44 38 40.30 74.30 31.00
4 53 55 47 18 23 36 23 14 25 41 17 12 10 15 18 11 23 35 38 25 13 12 28 45 28 29 26 31 37 41 ~ 27.56 54.52 30.00
5 23 31 23 24 11 8.41 12 33 34 20 13 14 21 23 28 21 28 18 13 19 16 31 34 31 17 20 17 17 14 14 21 20.83 33.55 31.00
6 16 18 6.05 11 30 29 24 26 17 14 18 26 34 36 21 17 22 12 12 18 27 11 7.53 12 17 23 24 22 17 14 ~ 19.49 36.43 30.00
7 11 16 20 25 20 14 12 15 16 28 21 23 29 20 7.93 14 23 25 25 14 15 23 19 14 9 15 17 21 21 21 19 18.44 28.93 31.00
8 22 26 33 18 19 24 25 24 21 20 11 23 38 34 26 19 19 27 30 17 15 25 34 37 24 28 21 13 29 28 46 24.93 45.99 31.00
9 22 23 34 25 17 20 21 10 11 16 19 24 47 37 25 22 21 32 32 34 34 28 30 ~ 37 73 49 38 55 43 ~ 30.32 73.38 29.00
10 44 43 35 40 52 44 56 70 38 43 38 53 63 88 71 92 ~ 52 81 26 35 39 49 43 75 33 31 33 26 27 19 47.95 91.86 30.00
11 14 23 40 40 45 42 30 26 17 57 70 76 22 47 91 64 52 56 45 37 47 23 19 29 39 70 78 43 44 32 ~ 43.95 91.25 30.00
12 31 64 38 58 156 66 100 39 100 106 56 17 48 87 73 15 23 31 37 27 36 41 20 32 17 24 28 17 28 15 15 46.57 156.30 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. 28 39 21 2 0 0 0 0 90 62 23 2 0 0 0 0 126
REL. 31.1 43.3 23.3 2.2 0.0 0.0 0.0 0.0 100.0 68.9 25.6 2.2 0.0 0.0 0.0 0.012.2
ID 31 43 23 4 0 0 0 0 102
ABS. 77 14 0 0 0 0 0 0 91 14 0 0 0 0 0 0 55
REL. 84.6 15.3 0.0 0.0 0.0 0.0 0.0 0.0 100.0 15.4 0.0 0.0 0.0 0.0 0.0 0.0 2.4
ID 84 15 0 0 0 0 0 0 100
ABS. 75 15 1 0 0 0 0 0 91 16 1 0 0 0 0 0 73
REL. 82.4 16.4 1.0 0.0 0.0 0.0 0.0 0.0100.0 17.6 1.1 0.0 0.0 0.0 0.0 0.0 26.9
ID 82 16 1 0 0 0 0 0 100
ABS. 32 42 14 2 1 0 0 0 91 59 17 3 1 0 0 0 156
REL 35.1 46.1 15.3 2.1 1.0 0.0 0.0 0.0100.0 64.8 18.7 3.3 1.1 0.0 0.0 0.0 5.12
ID 35 46 15 4 5 0 0 0 106
Year
ABS. 212 110 36 4 1 0 0 0 363 151 41 5 1 0 0 0 156
REL. 58.4 30.3 9.9 1.1 0.2 0.0 0.0 0.0100.0 41.6 11.3 1.4 0.3 0.0 0.0 0.0 5.12
ID 58 30 9 2 1 0 0 0 102

Note:

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