Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station:1106 - Slany
Code:CZKLCMSLA
Institution:CHMI
Region:Stredocesky
District:Kladno
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 61 49 20 20 18 25 29 21 29 59 75 100 52 85 140 44 27 50 42 33 35 45 50 46 54 87 116 67 71 49 42 52.96 140.48 31.00
2 67 58 51 86 94 89 47 33 46 55 51 37 37 31 26 26 33 69 52 77 84 85 55 59 67 45 30 22 ~ ~ ~ 54.03 94.40 28.00
3 22 25 23 19 19 21 15 18 32 51 52 41 28 24 37 38 37 34 26 26 26 29 42 49 57 71 48 47 48 54 65 36.25 70.91 31.00
4 54 33 33 20 31 42 25 34 44 33 31 22 34 37 51 38 40 30 28 46 44 43 44 34 28 26 26 31 29 29 ~ 34.76 54.46 30.00
5 22 20 25 25 27 23 27 27 25 32 34 32 26 22 23 14 25 28 27 22 23 20 15 14 17 20 34 26 20 16 20 23.62 33.75 31.00
6 20 26 24 22 21 17 15 28 22 19 20 15 12 16 16 11 16 18 16 15 17 20 14 23 22 17 11 10 18 13 ~ 17.84 28.39 30.00
7 17 22 18 12 9 11 23 12 13 13 6.35 6.11 ~ ~ 27 13 10 6.86 ~ 20 16 23 15 14 12 15 17 12 9 7.51 12 14.03 26.92 28.00
8 8.40 7.49 21 11 12 13 13 10 13 19 26 20 18 18 17 17 19 21 18 19 9 6.86 5.85 10 10 17 13 10 10 15 27 14.72 26.67 31.00
9 31 25 16 18 11 16 31 49 35 28 24 16 18 11 18 18 22 26 24 33 35 41 40 58 50 40 50 32 47 34 ~ 29.88 57.78 30.00
10 27 36 27 22 40 37 51 44 52 15 14 22 26 23 39 50 19 28 56 30 31 33 32 17 16 24 13 10 15 14 12 28.23 55.97 31.00
11 12 38 24 20 23 27 46 52 93 49 29 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 70 119 140 45 65 ~ 53.23 139.66 16.00
12 35 71 63 48 24 19 27 35 82 142 98 76 22 37 42 33 84 105 21 28 33 41 77 40 19 14 23 49 56 44 20 48.65 141.62 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. 30 43 14 3 0 0 0 0 90 60 17 3 0 0 0 0 140
REL. 33.3 47.7 15.5 3.3 0.0 0.0 0.0 0.0 100.0 66.7 18.9 3.3 0.0 0.0 0.0 0.015.1
ID 33 47 15 6 0 0 0 0 103
ABS. 74 17 0 0 0 0 0 0 91 17 0 0 0 0 0 0 54
REL. 81.3 18.6 0.0 0.0 0.0 0.0 0.0 0.0 100.0 18.7 0.0 0.0 0.0 0.0 0.0 0.0 1.4
ID 81 18 0 0 0 0 0 0 100
ABS. 78 11 0 0 0 0 0 0 89 11 0 0 0 0 0 0 58
REL. 87.6 12.3 0.0 0.0 0.0 0.0 0.0 0.0100.0 12.4 0.0 0.0 0.0 0.0 0.0 0.0 24.9
ID 87 12 0 0 0 0 0 0 100
ABS. 40 26 8 4 0 0 0 0 78 38 12 4 0 0 0 0 142
REL 51.2 33.3 10.2 5.1 0.0 0.0 0.0 0.0100.0 48.7 15.4 5.1 0.0 0.0 0.0 0.010.12
ID 51 33 10 10 0 0 0 0 105
Year
ABS. 222 97 22 7 0 0 0 0 348 126 29 7 0 0 0 0 142
REL. 63.7 27.8 6.3 2.0 0.0 0.0 0.0 0.0100.0 36.2 8.3 2.0 0.0 0.0 0.0 0.010.12
ID 63 27 6 4 0 0 0 0 102

Note:

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