Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 488 - Cheb-zubni odd.
Code:CZCHHSCHZ
Institution:Public Health Service
Region:Karlovarsky
District:Cheb
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 55 71 64 81 55 ~ ~ 43 40 27 42 91 89 59 37 65 71 41 43 64 61 62 57 57 58 67 21 48 40 17 ~ 54.50 91.00 28.00
2 21 29 55 ~ 13 ~ 59 ~ ~ ~ ~ ~ 33 37 81 58 ~ 20 14 12 8.00 16 12 12 19 28 ~ 31 ~ ~ ~ 29.37 81.00 19.00
3 28 22 26 28 22 ~ 37 41 27 ~ ~ 4.00 15 9.00 33 36 ~ 47 29 12 14 43 ~ 38 35 34 35 21 40 43 35 29.00 47.00 26.00
4 ~ 58 49 48 38 33 24 10 26 22 25 36 ~ ~ ~ ~ 16 31 41 18 25 78 43 44 48 28 43 27 36 45 ~ 35.68 78.00 25.00
5 75 27 38 30 18 32 11 9.00 54 49 40 40 17 18 16 30 12 16 15 17 30 20 18 23 30 22 15 36 10 18 25 26.16 75.00 31.00
6 20 15 11 11 20 26 19 27 24 19 31 33 25 16 13 29 30 20 27 25 14 19 21 19 45 55 35 24 19 28 ~ 24.00 55.00 30.00
7 27 12 13 12 15 14 9.00 9.00 16 19 9.00 20 14 20 17 8.00 13 6.00 10 9.00 9.00 10 15 25 27 23 30 29 7.00 15 25 15.71 30.00 31.00
8 22 4.00 4.00 16 4.00 29 19 16 14 12 11 23 18 38 35 44 26 33 35 11 14 17 28 47 29 31 32 24 21 25 22 22.71 47.00 31.00
9 24 19 36 10 10 12 17 18 20 17 20 23 36 20 25 21 26 22 22 27 30 17 28 30 33 26 48 45 48 24 ~ 25.13 48.00 30.00
10 4.00 24 14 35 52 40 19 27 7.00 24 17 8.00 14 19 39 27 30 23 52 45 28 20 43 55 13 36 20 30 12 12 8.00 25.71 55.00 31.00
11 11 6.00 6.00 14 11 19 32 28 23 14 20 ~ 31 47 78 58 72 35 38 52 37 27 16 20 25 30 ~ 35 ~ 33 ~ 30.30 78.00 27.00
12 39 32 27 42 38 28 53 56 21 105 86 31 71 22 21 45 18 29 30 28 30 18 34 25 31 20 15 16 11 13 ~ 34.50 105.00 30.00

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. 31 35 7 0 0 0 0 0 73 42 7 0 0 0 0 0 91
REL. 42.4 47.9 9.5 0.0 0.0 0.0 0.0 0.0 100.0 57.5 9.6 0.0 0.0 0.0 0.0 0.012.1
ID 42 47 9 0 0 0 0 0 100
ABS. 63 21 2 0 0 0 0 0 86 23 2 0 0 0 0 0 78
REL. 73.2 24.4 2.3 0.0 0.0 0.0 0.0 0.0 100.0 26.7 2.3 0.0 0.0 0.0 0.0 0.0 22.4
ID 73 24 2 0 0 0 0 0 100
ABS. 82 10 0 0 0 0 0 0 92 10 0 0 0 0 0 0 48
REL. 89.1 10.8 0.0 0.0 0.0 0.0 0.0 0.0100.0 10.9 0.0 0.0 0.0 0.0 0.0 0.0 27.9
ID 89 10 0 0 0 0 0 0 100
ABS. 60 23 4 1 0 0 0 0 88 28 5 1 0 0 0 0 105
REL 68.1 26.1 4.5 1.1 0.0 0.0 0.0 0.0100.0 31.8 5.7 1.1 0.0 0.0 0.0 0.010.12
ID 68 26 4 2 0 0 0 0 101
Year
ABS. 236 89 13 1 0 0 0 0 339 103 14 1 0 0 0 0 105
REL. 69.6 26.2 3.8 0.2 0.0 0.0 0.0 0.0100.0 30.4 4.1 0.3 0.0 0.0 0.0 0.010.12
ID 69 26 3 0 0 0 0 100

Note:

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