Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 804 - Pha10-Pocernicka
Code:CZ10CMPOC
Institution:CHMI
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 58 68 16 21 24 37 55 27 35 166 128 80 75 148 213 94 27 56 60 36 28 43 45 54 66 279 261 89 119 59 53 81.30 278.82 31.00
2 73 93 65 188 200 142 69 44 78 132 84 50 47 42 46 96 50 77 87 115 132 88 101 82 144 93 100 55 ~ ~ ~ 91.95 199.85 28.00
3 47 76 91 90 78 59 84 51 34 83 75 50 78 30 55 53 38 40 26 24 19 39 57 46 67 88 61 65 54 92 114 60.13 113.93 31.00
4 119 64 55 25 46 55 44 61 66 40 34 20 66 47 77 89 53 35 33 74 77 67 62 46 38 34 ~ ~ 39 34 ~ 53.53 118.62 28.00
5 24 19 30 24 33 40 81 36 26 43 51 87 38 31 34 21 28 43 38 35 32 16 23 26 26 ~ 44 ~ 36 38 ~ 35.80 86.98 28.00
6 ~ ~ 58 43 48 27 26 50 60 31 44 25 20 47 38 26 49 34 32 36 47 35 26 37 42 29 26 23 38 32 ~ 36.68 60.44 28.00
7 28 49 33 18 17 23 44 21 19 21 12 18 19 31 29 35 23 14 50 56 40 47 40 31 18 32 32 25 23 24 35 29.40 56.17 31.00
8 26 14 46 27 29 43 48 43 24 65 68 50 44 45 41 38 56 36 49 59 25 16 24 23 28 37 23 20 20 33 60 37.39 67.93 31.00
9 74 64 49 53 26 48 62 56 39 42 67 27 42 23 30 40 35 36 55 35 42 85 59 88 120 49 88 73 100 67 ~ 55.84 120.25 30.00
10 51 45 37 39 60 56 66 74 84 21 22 37 54 44 65 114 36 63 97 59 ~ ~ 46 ~ ~ ~ 22 16 28 25 20 49.29 113.71 26.00
11 18 54 47 50 40 50 131 99 141 132 49 105 101 56 50 78 37 52 86 41 41 74 193 232 96 112 179 139 76 101 ~ 88.64 232.01 30.00
12 66 106 109 77 36 26 36 48 138 195 162 134 73 181 309 85 233 304 63 78 63 63 107 54 25 ~ ~ 60 86 ~ ~ 107.99 309.11 27.00

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. 10 36 27 11 3 3 0 0 90 80 44 17 6 3 0 0 279
REL. 11.1 40.0 30.0 12.2 3.3 3.3 0.0 0.0 100.0 88.9 48.9 18.9 6.7 3.3 0.0 0.026.1
ID 11 40 30 24 16 83 0 0 205
ABS. 29 47 7 1 0 0 0 0 84 55 8 1 0 0 0 0 119
REL. 34.5 55.9 8.3 1.1 0.0 0.0 0.0 0.0 100.0 65.5 9.5 1.2 0.0 0.0 0.0 0.0 1.4
ID 34 55 8 2 0 0 0 0 101
ABS. 40 42 8 2 0 0 0 0 92 52 10 2 0 0 0 0 120
REL. 43.4 45.6 8.6 2.1 0.0 0.0 0.0 0.0100.0 56.5 10.9 2.2 0.0 0.0 0.0 0.0 25.9
ID 43 45 8 4 0 0 0 0 102
ABS. 10 36 14 14 5 2 2 0 83 73 37 23 9 4 2 0 309
REL 12.0 43.3 16.8 16.8 6.0 2.4 2.4 0.0100.0 88.0 44.6 27.7 10.8 4.8 2.4 0.015.12
ID 12 43 16 33 30 60 301 0 497
Year
ABS. 89 161 56 28 8 5 2 0 349 260 99 43 15 7 2 0 309
REL. 25.5 46.1 16.0 8.0 2.2 1.4 0.5 0.0100.0 74.5 28.4 12.3 4.3 2.0 0.6 0.015.12
ID 25 46 16 16 11 35 71 0 222

Note:

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