Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 804 - Pha10-Pocernicka
Code:CZ10CMPOC
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 45 50 91 146 90 32 52 78 71 114 82 112 102 71 141 95 38 117 77 45 45 47 55 65 77 91 37 113 120 53 47 77.46 146.25 31.00
2 47 50 58 77 33 55 94 118 55 105 77 142 63 96 226 225 50 33 47 25 32 25 32 51 72 64 74 64 ~ ~ ~ 74.58 225.88 28.00
3 87 57 47 40 39 47 44 50 81 24 48 37 38 33 113 97 47 61 27 29 59 89 76 56 50 30 42 38 39 110 63 54.74 112.75 31.00
4 87 93 87 64 39 49 28 32 65 58 36 23 18 20 20 58 66 34 57 34 18 29 66 116 53 35 71 29 36 29 ~ 48.45 116.28 30.00
5 32 36 42 39 20 18 24 29 49 68 23 25 35 36 41 35 27 32 26 58 31 41 65 86 37 34 22 30 32 43 48 37.50 86.32 31.00
6 30 20 15 25 77 63 37 33 27 24 37 44 46 59 44 25 35 24 25 54 44 27 15 55 ~ ~ ~ 72 ~ ~ ~ 38.32 77.35 25.00
7 ~ 27 ~ ~ ~ ~ ~ 21 33 58 71 ~ 52 47 24 67 49 ~ 61 41 ~ 63 ~ 47 28 43 60 40 43 58 37 46.13 70.69 21.00
8 67 47 39 28 27 38 46 36 74 39 39 39 58 47 32 39 19 31 47 35 27 36 47 51 43 41 25 18 60 43 51 41.06 74.08 31.00
9 27 30 42 33 31 35 27 16 13 26 26 36 44 39 23 38 49 56 52 59 37 49 39 52 43 54 51 43 38 55 ~ 38.75 59.05 30.00
10 44 49 55 58 91 52 94 107 128 71 50 106 89 143 128 114 72 104 174 59 46 71 89 74 86 45 36 48 44 46 62 78.48 174.15 31.00
11 25 47 73 52 72 52 40 28 34 113 90 74 49 105 115 142 62 50 62 105 69 34 29 47 162 189 125 63 62 62 ~ 74.28 188.76 30.00
12 24 26 56 95 121 83 40 47 136 124 92 35 55 62 80 34 59 56 53 44 28 40 32 18 18 27 26 21 42 22 26 52.44 135.78 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. 11 43 21 13 0 2 0 0 90 79 36 15 2 2 0 0 226
REL. 12.2 47.7 23.3 14.4 0.0 2.2 0.0 0.0 100.0 87.8 40.0 16.7 2.2 2.2 0.0 0.015.2
ID 12 47 23 28 0 55 0 0 167
ABS. 36 41 8 1 0 0 0 0 86 50 9 1 0 0 0 0 116
REL. 41.8 47.6 9.3 1.1 0.0 0.0 0.0 0.0 100.0 58.1 10.5 1.2 0.0 0.0 0.0 0.0 24.4
ID 41 47 9 2 0 0 0 0 101
ABS. 23 56 3 0 0 0 0 0 82 59 3 0 0 0 0 0 74
REL. 28.0 68.2 3.6 0.0 0.0 0.0 0.0 0.0100.0 72.0 3.7 0.0 0.0 0.0 0.0 0.0 9.8
ID 28 68 3 0 0 0 0 0 100
ABS. 14 41 18 16 3 0 0 0 92 78 37 19 3 0 0 0 189
REL 15.2 44.5 19.5 17.3 3.2 0.0 0.0 0.0100.0 84.8 40.2 20.7 3.3 0.0 0.0 0.026.11
ID 15 44 19 34 16 0 0 0 130
Year
ABS. 84 181 50 30 3 2 0 0 350 266 85 35 5 2 0 0 226
REL. 24.0 51.7 14.2 8.5 0.8 0.5 0.0 0.0100.0 76.0 24.3 10.0 1.4 0.6 0.0 0.0 15.2
ID 24 51 14 17 4 14 0 0 125

Note:

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