Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1199 - Sokolov
Code:CZSOHSSOK
Institution:Public Health Service
Region:Zapadocesky
District:Sokolov
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 15 22 22 22 60 101 22 28 29 17 40 31 38 22 20 38 59 113 100 83 108 106 72 45 32 29 30 38 20 17 24 45.33 113.43 31.00
2 47 57 60 29 10 7.98 12 23 84 69 109 72 26 18 39 25 12 30 40 32 13 15 17 19 28 55 58 23 ~ ~ ~ 36.75 109.26 28.00
3 19 24 33 53 33 29 50 51 46 36 45 48 42 41 36 ~ 45 57 49 9 23 21 24 ~ 64 66 36 17 29 47 76 39.72 76.24 29.00
4 63 49 40 15 17 24 21 21 34 30 15 21 18 19 19 20 11 35 38 40 48 51 50 23 22 47 36 30 46 36 ~ 31.31 63.38 30.00
5 22 21 27 18 20 25 28 26 34 26 19 18 32 28 12 22 23 15 26 26 38 20 28 41 ~ 29 31 26 25 21 23 25.00 40.56 30.00
6 23 20 21 20 18 13 40 43 42 30 32 24 24 34 32 29 29 19 21 16 21 22 25 35 31 21 21 33 40 30 ~ 26.99 42.96 30.00
7 31 33 25 20 19 18 23 29 31 20 21 29 23 25 25 33 33 28 37 32 23 23 26 19 31 31 34 35 35 37 32 27.88 37.47 31.00
8 32 35 31 32 49 33 29 31 39 30 25 38 43 24 17 28 34 31 24 26 18 27 35 44 34 48 34 29 32 39 38 32.63 48.60 31.00
9 34 31 33 21 20 28 33 53 53 46 33 35 54 48 64 43 42 30 24 35 44 55 65 58 59 21 37 36 35 26 ~ 39.88 64.94 30.00
10 21 34 16 36 33 29 39 36 18 16 32 61 68 47 68 43 39 39 ~ ~ 27 31 33 30 46 27 37 49 74 43 33 38.16 74.03 29.00
11 127 64 71 49 76 36 21 47 50 55 52 45 26 23 62 42 46 35 49 29 36 41 100 91 71 102 62 65 92 66 ~ 57.70 127.24 30.00
12 28 22 20 13 12 22 22 26 31 28 24 14 25 25 33 25 29 19 18 34 50 40 51 36 23 13 22 27 30 25 22 26.15 50.51 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. 45 31 7 5 0 0 0 0 88 43 12 5 0 0 0 0 113
REL. 51.1 35.2 7.9 5.6 0.0 0.0 0.0 0.0 100.0 48.9 13.6 5.7 0.0 0.0 0.0 0.018.1
ID 51 35 7 11 0 0 0 0 105
ABS. 67 23 0 0 0 0 0 0 90 23 0 0 0 0 0 0 63
REL. 74.4 25.5 0.0 0.0 0.0 0.0 0.0 0.0 100.0 25.6 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 74 25 0 0 0 0 0 0 100
ABS. 54 38 0 0 0 0 0 0 92 38 0 0 0 0 0 0 65
REL. 58.6 41.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 41.3 0.0 0.0 0.0 0.0 0.0 0.0 23.9
ID 58 41 0 0 0 0 0 0 100
ABS. 43 36 9 2 0 0 0 0 90 47 11 2 0 0 0 0 127
REL 47.7 40.0 10.0 2.2 0.0 0.0 0.0 0.0100.0 52.2 12.2 2.2 0.0 0.0 0.0 0.0 1.11
ID 47 40 10 4 0 0 0 0 102
Year
ABS. 209 128 16 7 0 0 0 0 360 151 23 7 0 0 0 0 127
REL. 58.0 35.5 4.4 1.9 0.0 0.0 0.0 0.0100.0 41.9 6.4 1.9 0.0 0.0 0.0 0.0 1.11
ID 58 35 4 3 0 0 0 0 101

Note:

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