Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 804 - Pha10-Pocernicka
Code:CZ10CMPOC
Institution:Czech Hydrometeorological Institute
Region:Hlavni mesto Praha
District:Praha 10
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ ~ ~ 68 138 38 46 30 35 53 40 52 36 31 41 63 67 57 56 49 98 43 35 35 53 71 54 29 28 51 51.71 137.67 27.00
2 65 84 63 35 22 21 35 55 166 186 91 33 28 41 49 37 27 38 54 46 25 31 29 41 29 69 49 30 ~ ~ ~ 52.86 186.31 28.00
3 23 50 65 80 60 51 58 59 93 86 47 75 51 47 42 ~ 65 108 49 22 28 36 35 134 181 71 34 24 55 123 136 66.17 180.58 30.00
4 123 86 65 27 35 40 33 27 50 29 30 43 31 34 28 38 27 45 46 ~ ~ 108 116 57 70 110 74 79 103 127 ~ 59.93 127.02 28.00
5 42 45 82 57 63 ~ ~ 19 41 23 19 22 31 34 10 52 41 29 36 38 37 21 35 58 37 41 57 ~ ~ ~ ~ 38.86 81.72 25.00
6 36 29 51 28 22 13 36 38 45 43 23 21 15 26 23 42 28 20 29 28 21 14 34 77 30 19 24 35 79 38 ~ 32.20 78.89 30.00
7 43 41 18 14 11 15 15 30 27 23 27 44 31 25 41 30 40 34 45 34 ~ 20 21 16 54 26 21 26 42 43 18 29.10 53.66 30.00
8 48 45 63 56 57 38 21 23 47 29 19 40 45 22 21 42 37 42 29 24 15 45 61 80 74 54 ~ ~ ~ ~ ~ 41.43 80.08 26.00
9 22 46 54 19 24 40 63 117 135 102 46 69 65 142 81 67 52 28 29 29 62 88 85 68 56 34 50 64 34 75 ~ 61.55 141.60 30.00
10 28 32 26 58 63 50 64 44 20 34 41 97 185 61 65 34 61 79 74 62 39 39 48 39 84 51 37 58 91 63 43 57.00 184.94 31.00
11 124 123 141 124 140 53 36 61 58 63 55 83 52 30 97 77 56 63 92 65 149 73 74 123 87 247 59 99 70 124 ~ 89.89 246.74 30.00
12 42 41 37 23 28 37 31 49 55 71 42 17 37 ~ 54 38 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 59 46 61 44 60 43.52 70.73 20.00

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. 18 47 12 5 3 0 0 0 85 67 20 8 3 0 0 0 186
REL. 21.1 55.2 14.1 5.8 3.5 0.0 0.0 0.0 100.0 78.8 23.5 9.4 3.5 0.0 0.0 0.010.2
ID 21 55 14 11 17 0 0 0 120
ABS. 34 36 7 6 0 0 0 0 83 49 13 6 0 0 0 0 127
REL. 40.9 43.3 8.4 7.2 0.0 0.0 0.0 0.0 100.0 59.0 15.7 7.2 0.0 0.0 0.0 0.0 30.4
ID 40 43 8 14 0 0 0 0 107
ABS. 34 40 8 4 0 0 0 0 86 52 12 4 0 0 0 0 142
REL. 39.5 46.5 9.3 4.6 0.0 0.0 0.0 0.0100.0 60.5 14.0 4.7 0.0 0.0 0.0 0.0 14.9
ID 39 46 9 9 0 0 0 0 104
ABS. 9 47 15 8 1 1 0 0 81 72 25 10 2 1 0 0 247
REL 11.1 58.0 18.5 9.8 1.2 1.2 0.0 0.0100.0 88.9 30.9 12.3 2.5 1.2 0.0 0.026.11
ID 11 58 18 19 6 30 0 0 144
Year
ABS. 95 170 42 23 4 1 0 0 335 240 70 28 5 1 0 0 247
REL. 28.3 50.7 12.5 6.8 1.1 0.2 0.0 0.0100.0 71.6 20.9 8.4 1.5 0.3 0.0 0.026.11
ID 28 50 12 13 5 7 0 0 118

Note:

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