Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 780 - Pha9-Vysocany
Code:CZ09CMVYS
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 9
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 47 46 165 138 169 41 62 115 112 115 94 123 88 64 143 103 31 103 57 44 40 43 45 55 97 119 33 163 145 65 56 87.75 169.16 31.00
2 63 66 58 94 39 64 93 138 67 109 149 234 75 144 333 292 53 47 60 31 30 29 43 56 93 96 86 59 ~ ~ ~ 96.34 332.85 28.00
3 142 58 44 50 46 41 40 50 123 35 73 49 46 43 143 82 52 54 29 36 57 90 71 74 54 33 34 34 41 154 88 63.53 154.20 31.00
4 111 89 96 52 60 53 32 50 85 81 50 33 25 26 24 78 72 45 77 38 24 37 110 127 43 49 95 41 47 43 ~ 59.82 127.34 30.00
5 44 37 51 53 30 30 37 43 48 67 40 43 61 38 48 43 45 49 51 66 43 43 67 94 58 46 55 68 44 49 35 49.19 94.07 31.00
6 33 20 16 34 74 78 48 38 25 27 47 47 33 67 37 15 32 ~ 28 60 47 28 16 59 77 72 44 46 61 26 ~ 42.55 78.45 29.00
7 27 35 22 18 20 11 12 30 42 58 38 28 43 33 18 37 51 31 48 39 41 50 39 55 30 46 69 38 37 60 39 36.86 68.63 31.00
8 51 37 37 26 24 37 49 28 63 45 35 36 66 45 24 45 28 31 64 37 40 58 41 69 53 48 40 30 65 28 55 43.07 68.82 31.00
9 34 53 63 44 48 59 38 17 16 36 32 47 48 51 28 49 49 69 43 60 40 63 33 56 55 83 69 44 39 59 ~ 47.43 83.46 30.00
10 45 70 89 75 81 44 77 114 160 117 60 130 87 152 167 98 52 124 195 66 48 80 94 69 95 47 32 53 54 61 68 87.23 195.07 31.00
11 37 79 76 58 123 51 48 30 51 152 119 90 85 140 198 243 55 56 89 203 100 44 39 71 197 147 110 89 83 59 ~ 97.35 243.21 30.00
12 27 27 52 86 221 77 55 48 167 158 110 46 51 69 92 37 69 83 70 62 36 43 42 24 22 37 36 28 40 29 38 63.94 221.31 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. 6 44 16 17 4 2 1 0 90 84 40 24 7 3 1 0 333
REL. 6.6 48.8 17.7 18.8 4.4 2.2 1.1 0.0 100.0 93.3 44.4 26.7 7.8 3.3 1.1 0.015.2
ID 6 48 17 37 22 55 138 0 327
ABS. 20 50 17 3 0 0 0 0 90 70 20 3 0 0 0 0 127
REL. 22.2 55.5 18.8 3.3 0.0 0.0 0.0 0.0 100.0 77.8 22.2 3.3 0.0 0.0 0.0 0.0 24.4
ID 22 55 18 6 0 0 0 0 103
ABS. 25 62 5 0 0 0 0 0 92 67 5 0 0 0 0 0 83
REL. 27.1 67.3 5.4 0.0 0.0 0.0 0.0 0.0100.0 72.8 5.4 0.0 0.0 0.0 0.0 0.0 26.9
ID 27 67 5 0 0 0 0 0 100
ABS. 8 34 27 11 9 3 0 0 92 84 50 23 12 3 0 0 243
REL 8.6 36.9 29.3 11.9 9.7 3.2 0.0 0.0100.0 91.3 54.3 25.0 13.0 3.3 0.0 0.016.11
ID 8 36 29 23 48 81 0 0 229
Year
ABS. 59 190 65 31 13 5 1 0 364 305 115 50 19 6 1 0 333
REL. 16.2 52.1 17.8 8.5 3.5 1.3 0.2 0.0100.0 83.8 31.6 13.7 5.2 1.6 0.3 0.0 15.2
ID 16 52 17 17 17 34 34 0 189

Note:

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