Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 487 - Cheb-U hradu
Code:CZCHHSCHU
Institution:Public Health Service
Region:Zapadocesky
District:Cheb
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ 13 4.00 8.00 11 22 11 31 22 4.00 69 9.00 79 13 67 20 4.00 41 4.00 36 9.00 47 38 4.00 75 7.00 113 5.00 96 10 30.07 113.00 29.00
2 ~ 6.00 27 36 72 ~ ~ 19 21 91 24 114 23 ~ ~ 30 4.00 ~ 6.00 ~ 5.00 6.00 13 8.00 15 6.00 20 10 ~ ~ ~ 26.48 114.00 21.00
3 4.00 15 5.00 13 4.00 4.00 4.00 4.00 16 22 26 22 19 12 14 7.00 4.00 4.00 9.00 14 17 4.00 29 14 22 10 30 4.00 34 20 31 14.10 34.00 31.00
4 29 18 17 22 18 15 19 16 20 22 16 13 ~ 22 32 18 19 14 4.00 27 4.00 42 4.00 4.00 36 8.00 23 ~ 5.00 37 ~ 18.71 42.00 28.00
5 21 10 4.00 9.00 4.00 23 9.00 18 17 18 4.00 26 6.00 19 4.00 4.00 24 4.00 ~ ~ 13 8.00 10 9.00 9.00 7.00 8.00 13 8.00 6.00 6.00 11.07 26.00 29.00
6 7.00 ~ ~ 7.00 14 22 4.00 16 6.00 10 4.00 4.00 5.00 4.00 11 4.00 7.00 4.00 4.00 4.00 4.00 9.00 4.00 6.00 5.00 7.00 4.00 4.00 50 4.00 ~ 8.36 50.00 28.00
7 9.00 4.00 15 4.00 14 9.00 9.00 4.00 15 4.00 4.00 4.00 16 4.00 8.00 4.00 4.00 4.00 4.00 4.00 26 4.00 22 10 10 10 5.00 6.00 8.00 5.00 4.00 8.16 26.00 31.00
8 8.00 4.00 7.00 ~ ~ ~ 17 4.00 13 6.00 15 4.00 4.00 4.00 4.00 4.00 9.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 6.00 4.00 4.00 4.00 4.00 4.00 4.00 5.75 17.00 28.00
9 ~ 4.00 4.00 4.00 4.00 5.00 4.00 4.00 5.00 4.00 ~ 5.00 5.00 7.00 7.00 8.00 5.00 5.00 4.00 4.00 9.00 5.00 7.00 10 ~ 8.00 4.00 8.00 4.00 10 ~ 5.67 10.00 27.00
10 14 4.00 ~ 16 4.00 34 ~ 5.00 4.00 4.00 4.00 5.00 6.00 5.00 6.00 19 13 4.00 22 4.00 29 ~ 31 5.00 4.00 15 42 22 8.00 12 7.00 12.43 42.00 28.00
11 ~ 16 9.00 18 4.00 49 ~ ~ 4.00 4.00 4.00 4.00 41 4.00 39 4.00 25 ~ 53 29 26 4.00 40 6.00 65 5.00 63 8.00 ~ 9.00 ~ 21.32 65.00 25.00
12 43 35 5.00 49 19 5.00 12 5.00 45 32 109 12 ~ ~ 21 4.00 12 31 12 5.00 8.00 4.00 28 4.00 30 4.00 19 4.00 35 4.00 27 21.48 109.00 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. 66 6 7 2 0 0 0 0 81 15 9 2 0 0 0 0 114
REL. 81.4 7.4 8.6 2.4 0.0 0.0 0.0 0.0 100.0 18.5 11.1 2.5 0.0 0.0 0.0 0.012.2
ID 81 7 8 4 0 0 0 0 102
ABS. 81 4 0 0 0 0 0 0 85 4 0 0 0 0 0 0 50
REL. 95.2 4.7 0.0 0.0 0.0 0.0 0.0 0.0 100.0 4.7 0.0 0.0 0.0 0.0 0.0 0.0 29.6
ID 95 4 0 0 0 0 0 0 100
ABS. 86 0 0 0 0 0 0 0 86 0 0 0 0 0 0 0 26
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 21.7
ID 100 0 0 0 0 0 0 0 100
ABS. 67 14 0 1 0 0 0 0 82 15 1 1 0 0 0 0 109
REL 81.7 17.0 0.0 1.2 0.0 0.0 0.0 0.0100.0 18.3 1.2 1.2 0.0 0.0 0.0 0.011.12
ID 81 17 0 2 0 0 0 0 101
Year
ABS. 300 24 7 3 0 0 0 0 334 34 10 3 0 0 0 0 114
REL. 89.8 7.1 2.0 0.8 0.0 0.0 0.0 0.0100.0 10.2 3.0 0.9 0.0 0.0 0.0 0.0 12.2
ID 89 7 2 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