Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1032 - Sokolov
Code:CZSOCMSOK
Institution:CHMI
Region:Zapadocesky
District:Sokolov
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 65 40 10 12 15 ~ 15 26 26 45 138 185 162 161 44 34 14 26 23 25 27 38 44 37 36 61 56 55 56 49 27 51.84 184.88 30.00
2 29 48 43 81 69 82 62 25 47 73 55 38 39 31 25 25 21 41 40 45 79 55 36 45 30 32 26 14 ~ ~ ~ 44.03 81.56 28.00
3 13 29 21 14 14 23 15 12 19 21 20 27 21 11 13 19 29 25 17 19 18 20 20 29 41 35 48 28 23 44 51 23.84 50.88 31.00
4 34 25 24 12 17 27 26 28 29 22 18 15 18 21 24 21 27 21 21 33 27 27 27 27 24 21 24 28 23 20 ~ 23.71 33.85 30.00
5 18 14 18 17 18 19 21 21 22 26 35 36 32 26 24 19 23 27 23 24 20 17 15 23 30 32 28 28 23 18 19 23.07 36.33 31.00
6 22 29 24 25 22 24 22 25 27 28 28 17 16 24 18 16 18 18 18 15 22 17 19 22 21 24 15 15 20 20 ~ 21.12 28.72 30.00
7 24 24 17 16 19 20 20 15 23 17 14 14 15 15 20 19 17 13 17 26 19 28 25 17 25 21 21 21 17 17 16 19.17 27.58 31.00
8 20 16 20 19 15 20 24 21 23 26 33 30 27 22 20 25 26 21 24 25 16 10 10 15 17 18 17 16 13 20 29 20.63 32.81 31.00
9 39 38 28 27 21 16 24 26 20 23 17 16 12 16 21 24 23 20 23 32 34 33 38 35 54 42 31 29 36 37 ~ 27.92 54.49 30.00
10 35 50 38 28 47 40 45 54 48 23 16 23 22 18 26 42 12 18 47 34 33 35 35 16 14 ~ ~ 16 18 21 19 30.21 54.33 29.00
11 17 28 16 16 25 27 38 47 41 25 20 43 87 25 17 26 18 36 35 30 27 31 45 45 35 73 70 78 31 56 ~ 36.92 86.76 30.00
12 35 49 50 57 26 15 22 35 93 144 69 66 19 33 39 26 63 70 31 13 26 37 30 41 16 14 14 70 52 25 18 41.91 143.85 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. 48 32 5 1 3 0 0 0 89 41 9 4 3 0 0 0 185
REL. 53.9 35.9 5.6 1.1 3.3 0.0 0.0 0.0 100.0 46.1 10.1 4.5 3.4 0.0 0.0 0.012.1
ID 53 35 5 2 16 0 0 0 114
ABS. 88 3 0 0 0 0 0 0 91 3 0 0 0 0 0 0 36
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 12.5
ID 96 3 0 0 0 0 0 0 100
ABS. 83 9 0 0 0 0 0 0 92 9 0 0 0 0 0 0 54
REL. 90.2 9.7 0.0 0.0 0.0 0.0 0.0 0.0100.0 9.8 0.0 0.0 0.0 0.0 0.0 0.0 25.9
ID 90 9 0 0 0 0 0 0 100
ABS. 46 35 8 1 0 0 0 0 90 44 9 1 0 0 0 0 144
REL 51.1 38.8 8.8 1.1 0.0 0.0 0.0 0.0100.0 48.9 10.0 1.1 0.0 0.0 0.0 0.010.12
ID 51 38 8 2 0 0 0 0 101
Year
ABS. 265 79 13 2 3 0 0 0 362 97 18 5 3 0 0 0 185
REL. 73.2 21.8 3.5 0.5 0.8 0.0 0.0 0.0100.0 26.8 5.0 1.4 0.8 0.0 0.0 0.0 12.1
ID 73 21 3 1 4 0 0 0 103

Note:

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