Detailed overview of ambient air pollution valuis from individual stations


Year: 2000
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 261 - Chomutov-OHS
Code:CZCVHSCHO
Institution:Public Health Service
Region:Severocesky
District:Chomutov
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 20 23 21 37 29 38 43 38 32 43 40 22 29 24 19 11 5.00 8.00 17 17 24 12 27 49 64 42 42 23 11 16 27.53 64.00 30.00
2 22 23 ~ 35 21 59 34 16 11 24 27 33 36 21 34 39 31 22 23 16 41 59 56 52 25 31 49 73 46 ~ ~ 34.25 73.00 28.00
3 27 11 24 9.00 11 25 27 18 14 26 13 21 57 32 16 21 20 20 18 24 20 70 81 65 43 33 19 23 28 24 24 27.87 81.00 31.00
4 28 29 45 57 22 15 12 15 24 33 42 46 28 39 32 36 41 45 42 47 39 33 26 14 37 38 30 23 23 21 ~ 32.07 57.00 30.00
5 26 22 28 25 28 21 15 17 27 28 21 73 18 20 31 33 22 27 22 13 17 17 23 27 31 23 15 19 19 23 20 24.23 73.00 31.00
6 31 30 23 30 25 22 22 25 23 22 14 18 21 18 14 9.00 11 14 31 30 27 20 20 13 8.00 16 10 10 13 12 ~ 19.40 31.00 30.00
7 13 13 19 18 9.00 13 16 6.00 8.00 18 16 28 19 18 11 7.00 13 37 9.00 11 12 8.00 14 23 16 15 16 13 6.00 8.00 19 14.58 37.00 31.00
8 25 25 11 15 10 9.00 15 22 15 24 8.00 25 13 13 18 11 14 23 17 15 13 11 16 27 15 8.00 14 31 22 20 22 17.00 31.00 31.00
9 20 10 ~ 8.00 15 20 14 13 15 14 17 17 22 15 16 9.00 7.00 12 29 15 21 28 13 17 34 36 44 46 16 15 ~ 19.24 46.00 29.00
10 9.00 27 19 28 31 21 11 13 20 21 33 39 44 29 13 30 28 35 31 20 32 32 59 28 29 25 25 24 23 48 28 27.58 59.00 31.00
11 41 42 32 25 26 24 39 43 110 35 36 37 43 39 48 54 27 33 46 48 43 41 44 48 24 24 40 41 35 38 ~ 40.20 110.00 30.00
12 48 36 41 40 37 30 26 33 34 19 28 30 21 39 22 12 21 53 64 41 51 34 38 44 27 34 44 36 45 38 27 35.26 64.00 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. 61 25 3 0 0 0 0 0 89 28 3 0 0 0 0 0 81
REL. 68.5 28.0 3.3 0.0 0.0 0.0 0.0 0.0 100.0 31.5 3.4 0.0 0.0 0.0 0.0 0.023.3
ID 68 28 3 0 0 0 0 0 100
ABS. 77 13 1 0 0 0 0 0 91 14 1 0 0 0 0 0 73
REL. 84.6 14.2 1.0 0.0 0.0 0.0 0.0 0.0 100.0 15.4 1.1 0.0 0.0 0.0 0.0 0.0 12.5
ID 84 14 1 0 0 0 0 0 100
ABS. 86 5 0 0 0 0 0 0 91 5 0 0 0 0 0 0 46
REL. 94.5 5.4 0.0 0.0 0.0 0.0 0.0 0.0100.0 5.5 0.0 0.0 0.0 0.0 0.0 0.0 28.9
ID 94 5 0 0 0 0 0 0 100
ABS. 46 45 0 1 0 0 0 0 92 46 1 1 0 0 0 0 110
REL 50.0 48.9 0.0 1.0 0.0 0.0 0.0 0.0100.0 50.0 1.1 1.1 0.0 0.0 0.0 0.0 9.11
ID 50 48 0 2 0 0 0 0 101
Year
ABS. 270 88 4 1 0 0 0 0 363 93 5 1 0 0 0 0 110
REL. 74.3 24.2 1.1 0.2 0.0 0.0 0.0 0.0100.0 25.6 1.4 0.3 0.0 0.0 0.0 0.0 9.11
ID 74 24 1 0 0 0 0 100

Note:

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