Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 487 - Cheb-U hradu
Code:CZCHHSCHU
Institution:Public Health Service
Region:Karlovarsky
District:Cheb
IHd: 100
Measure method:triethanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 25 41 63 45 36 107 38 35 67 56 50 18 39 30 37 36 32 36 18 29 41 35 19 25 12 15 11 11 26 37 35.67 107.00 30.00
2 48 38 44 68 52 21 45 37 13 17 12 17 10 17 24 14 25 11 32 23 23 29 15 9.00 38 23 6.00 11 ~ ~ ~ 25.79 68.00 28.00
3 20 21 28 25 39 19 20 21 13 45 29 19 24 ~ 20 29 22 21 12 17 16 10 11 18 13 13 28 19 19 26 15 21.07 45.00 30.00
4 42 27 19 25 23 14 33 34 14 9.00 7.00 23 17 14 23 11 19 55 13 15 14 20 20 18 23 13 8.00 15 11 25 ~ 20.13 55.00 30.00
5 18 16 12 14 15 18 29 15 11 14 15 13 13 13 10 4.00 15 4.00 5.00 8.00 5.00 13 10 6.00 6.00 9.00 9.00 12 14 13 10 11.90 29.00 31.00
6 6.00 8.00 7.00 10 6.00 6.00 5.00 11 30 11 15 15 15 19 21 15 15 23 16 16 17 11 16 10 13 12 9.00 5.00 7.00 8.00 ~ 12.60 30.00 30.00
7 7.00 9.00 10 8.00 14 11 10 12 13 14 4.00 22 23 17 8.00 23 14 12 10 9.00 12 11 15 12 9.00 10 14 9.00 18 18 18 12.77 23.00 31.00
8 12 7.00 8.00 11 12 21 11 10 11 11 21 8.00 9.00 12 15 16 11 11 25 17 15 12 16 8.00 10 4.00 4.00 4.00 18 23 17 12.58 25.00 31.00
9 12 27 22 24 27 23 19 26 27 22 9.00 4.00 9.00 5.00 5.00 4.00 4.00 5.00 5.00 6.00 5.00 5.00 16 13 20 11 12 10 7.00 16 ~ 13.33 27.00 30.00
10 23 41 27 23 9.00 20 12 12 12 9.00 13 17 10 19 21 18 7.00 25 26 22 14 38 18 16 12 16 8.00 19 23 15 24 18.35 41.00 31.00
11 19 11 28 19 15 22 15 15 11 9.00 19 13 33 31 35 24 21 31 23 20 23 16 32 41 53 35 31 37 11 53 ~ 24.87 53.00 30.00
12 25 27 24 23 25 29 36 36 25 46 34 17 16 10 22 24 25 20 29 16 4.00 39 50 56 31 22 20 18 29 ~ ~ 26.83 56.00 29.00

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 24 2 1 0 0 0 0 88 27 3 1 0 0 0 0 107
REL. 69.3 27.2 2.2 1.1 0.0 0.0 0.0 0.0 100.0 30.7 3.4 1.1 0.0 0.0 0.0 0.07.1
ID 69 27 2 2 0 0 0 0 101
ABS. 88 3 0 0 0 0 0 0 91 3 0 0 0 0 0 0 55
REL. 96.7 3.2 0.0 0.0 0.0 0.0 0.0 0.0 100.0 3.3 0.0 0.0 0.0 0.0 0.0 0.0 18.4
ID 96 3 0 0 0 0 0 0 100
ABS. 92 0 0 0 0 0 0 0 92 0 0 0 0 0 0 0 27
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 2.9
ID 100 0 0 0 0 0 0 0 100
ABS. 75 15 0 0 0 0 0 0 90 15 0 0 0 0 0 0 56
REL 83.3 16.6 0.0 0.0 0.0 0.0 0.0 0.0100.0 16.7 0.0 0.0 0.0 0.0 0.0 0.024.12
ID 83 16 0 0 0 0 0 0 100
Year
ABS. 316 42 2 1 0 0 0 0 361 45 3 1 0 0 0 0 107
REL. 87.5 11.6 0.5 0.2 0.0 0.0 0.0 0.0100.0 12.5 0.8 0.3 0.0 0.0 0.0 0.0 7.1
ID 87 11 0 0 0 0 100

Note:

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