Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 779 - Pha8-Kobylisy
Code:CZ08CMKOB
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 8
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 17 25 40 38 66 108 42 48 19 17 36 37 50 35 32 52 47 74 53 58 50 94 51 52 37 48 48 46 12 13 41 44.67 108.12 31.00
2 71 62 46 23 10 11 23 41 ~ ~ 40 17 15 ~ ~ 32 17 28 72 45 29 25 17 26 26 95 81 44 ~ ~ ~ 37.43 95.18 24.00
3 23 39 58 55 51 55 34 44 96 74 19 39 37 32 24 22 38 85 62 16 30 43 ~ ~ 112 54 17 15 28 69 73 46.34 112.00 29.00
4 60 53 75 27 43 44 25 18 57 30 21 35 27 27 21 21 22 32 32 64 65 63 58 23 20 32 24 39 41 58 ~ 38.54 75.13 30.00
5 26 18 31 16 18 22 25 28 35 27 21 20 27 25 ~ 27 16 18 26 26 28 21 38 60 34 23 32 29 21 32 17 26.21 59.78 30.00
6 24 29 41 26 17 13 21 29 28 20 18 16 12 15 16 29 18 16 23 29 21 11 25 46 19 16 26 28 76 50 ~ 25.20 75.68 30.00
7 72 66 50 43 52 53 46 36 57 50 55 69 81 32 28 19 33 26 23 29 17 21 15 18 49 21 13 17 23 26 18 37.50 81.48 31.00
8 25 31 40 34 47 23 34 26 42 33 16 20 42 21 20 28 28 37 24 15 10 36 36 42 30 23 25 15 34 54 44 30.15 54.34 31.00
9 16 27 30 16 17 35 36 53 71 58 26 44 47 86 58 52 30 19 15 20 50 54 70 56 48 38 43 54 32 59 ~ 41.98 86.14 30.00
10 23 27 21 43 39 22 40 38 13 20 32 56 115 44 22 17 23 32 34 31 25 29 ~ ~ ~ ~ 26 45 43 36 30 34.36 115.46 27.00
11 80 74 57 80 72 32 37 34 31 32 33 51 31 18 38 45 51 48 47 33 92 71 44 78 102 159 60 50 68 87 ~ 57.81 158.57 30.00
12 31 27 35 23 17 35 27 38 57 86 40 17 28 43 30 29 46 34 25 31 64 86 72 22 33 24 28 25 29 34 62 37.96 86.07 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. 31 40 11 2 0 0 0 0 84 53 13 2 0 0 0 0 112
REL. 36.9 47.6 13.0 2.3 0.0 0.0 0.0 0.0 100.0 63.1 15.5 2.4 0.0 0.0 0.0 0.025.3
ID 36 47 13 4 0 0 0 0 102
ABS. 68 20 2 0 0 0 0 0 90 22 2 0 0 0 0 0 76
REL. 75.5 22.2 2.2 0.0 0.0 0.0 0.0 0.0 100.0 24.4 2.2 0.0 0.0 0.0 0.0 0.0 29.6
ID 75 22 2 0 0 0 0 0 100
ABS. 45 41 6 0 0 0 0 0 92 47 6 0 0 0 0 0 86
REL. 48.9 44.5 6.5 0.0 0.0 0.0 0.0 0.0100.0 51.1 6.5 0.0 0.0 0.0 0.0 0.0 14.9
ID 48 44 6 0 0 0 0 0 100
ABS. 40 33 12 2 1 0 0 0 88 48 15 3 1 0 0 0 159
REL 45.4 37.5 13.6 2.2 1.1 0.0 0.0 0.0100.0 54.5 17.0 3.4 1.1 0.0 0.0 0.026.11
ID 45 37 13 4 5 0 0 0 106
Year
ABS. 184 134 31 4 1 0 0 0 354 170 36 5 1 0 0 0 159
REL. 51.9 37.8 8.7 1.1 0.2 0.0 0.0 0.0100.0 48.0 10.2 1.4 0.3 0.0 0.0 0.026.11
ID 51 37 8 2 1 0 0 0 102

Note:

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