Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 261 - Chomutov-OHS
Code:CZCVHSCHO
Institution:Public Health Service
Region:Ustecky
District:Chomutov
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 23 25 32 40 48 34 37 50 39 53 49 41 42 53 63 46 32 41 37 354 21 24 26 ~ 35 25 22 34 30 21 11 46.27 354.00 30.00
2 19 18 28 41 33 44 49 46 29 27 48 66 22 33 56 79 18 11 13 9.00 10 13 11 14 33 43 28 27 ~ ~ ~ 31.00 79.00 28.00
3 43 36 18 33 26 21 29 29 34 16 22 28 16 19 24 43 32 31 13 16 21 26 29 19 24 13 18 20 16 29 23 24.74 43.00 31.00
4 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
5 31 32 24 25 15 6.00 7.00 18 20 23 11 8.00 15 18 27 15 20 15 8.00 11 12 14 21 24 13 12 9.00 15 13 13 16 16.48 32.00 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 6.00 10 11 18 17 13 13 12 10 18 13 14 15 11 7.00 11 10 13 14 10 8.00 14 12 13 9.00 10 14 18 16 12 14 12.45 18.00 31.00
8 12 17 20 13 12 21 12 13 10 6.00 ~ 14 27 23 19 13 12 16 18 13 9.00 16 25 26 15 17 21 10 13 20 25 16.27 27.00 30.00
9 18 11 19 11 10 17 14 5.00 6.00 13 17 11 21 17 13 10 23 18 21 23 22 21 21 26 22 33 28 20 25 20 ~ 17.87 33.00 30.00
10 32 26 23 35 33 29 35 42 29 17 23 31 31 70 53 36 26 37 41 29 27 27 33 31 37 27 21 21 17 24 16 30.94 70.00 31.00
11 13 16 22 20 34 29 23 23 13 33 39 44 20 30 48 47 32 26 24 26 27 18 22 17 23 37 44 29 28 28 ~ 27.83 48.00 30.00
12 20 34 34 37 76 44 40 29 49 63 32 14 34 53 44 15 23 18 30 24 22 18 13 16 11 15 14 11 11 4.00 7.00 27.58 76.00 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. 58 29 1 0 0 0 1 0 89 31 2 1 1 1 1 0 354
REL. 65.1 32.5 1.1 0.0 0.0 0.0 1.1 0.0 100.0 34.8 2.2 1.1 1.1 1.1 1.1 0.020.1
ID 65 32 1 0 0 0 140 0 239
ABS. 61 0 0 0 0 0 0 0 61 0 0 0 0 0 0 0 32
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5
ID 100 0 0 0 0 0 0 0 100
ABS. 91 0 0 0 0 0 0 0 91 0 0 0 0 0 0 0 33
REL.100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0100.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.9
ID 100 0 0 0 0 0 0 0 100
ABS. 65 25 2 0 0 0 0 0 92 27 2 0 0 0 0 0 76
REL 70.6 27.1 2.1 0.0 0.0 0.0 0.0 0.0100.0 29.3 2.2 0.0 0.0 0.0 0.0 0.0 5.12
ID 70 27 2 0 0 0 0 0 100
Year
ABS. 275 54 3 0 0 0 1 0 333 58 4 1 1 1 1 0 354
REL. 82.5 16.2 0.9 0.0 0.0 0.0 0.3 0.0100.0 17.4 1.2 0.3 0.3 0.3 0.3 0.0 20.1
ID 82 16 0 0 0 37 0 137

Note:

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