Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
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 31 34 125 167 233 172 168 232 64 67 69 93 67 107 57 50 120 59 50 33 60 97 75 44 43 20 31 27 47 139 125 87.32 232.64 31.00
2 96 71 83 137 82 95 74 41 22 21 26 32 71 58 54 32 135 85 37 27 41 31 24 28 66 25 32 36 ~ ~ ~ 55.82 136.83 28.00
3 62 31 36 95 224 75 27 123 41 56 89 122 164 40 50 36 109 78 48 59 58 29 17 19 35 40 67 188 198 118 88 78.19 224.45 31.00
4 88 60 33 42 28 19 31 61 45 31 32 25 29 32 65 65 87 56 54 32 32 83 51 51 48 30 20 32 32 58 ~ 45.16 87.93 30.00
5 36 43 39 24 36 49 26 19 23 22 42 54 70 35 69 69 42 22 31 36 30 23 27 44 27 52 41 51 34 72 39 39.60 71.78 31.00
6 23 63 63 31 18 26 53 30 56 41 63 60 34 39 31 62 51 39 40 27 27 25 24 48 47 41 37 27 29 50 ~ 40.19 63.04 30.00
7 55 65 27 29 18 16 33 42 29 26 68 30 19 20 33 40 57 35 48 27 31 35 41 34 50 36 40 41 39 33 48 36.94 68.29 31.00
8 78 85 36 30 58 45 43 53 52 17 22 30 29 39 41 48 46 37 34 39 38 90 82 40 40 29 47 95 83 102 41 49.89 101.81 31.00
9 37 35 36 51 64 90 58 34 42 48 71 73 111 32 29 67 63 65 64 120 96 53 38 32 60 83 34 64 98 187 ~ 64.50 187.33 30.00
10 151 115 93 94 25 26 49 62 36 37 29 24 36 84 107 123 74 60 51 125 106 195 38 150 60 24 17 34 78 218 112 78.49 217.89 31.00
11 112 41 29 68 43 51 100 59 28 137 115 196 189 160 226 145 180 160 69 71 63 124 165 58 175 179 77 50 ~ ~ ~ 109.70 225.78 28.00
12 ~ ~ ~ 75 56 51 31 31 64 77 130 55 57 51 41 126 143 71 208 183 143 72 54 32 29 32 48 75 70 ~ 32 75.41 207.72 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. 21 29 20 11 6 3 0 0 90 69 40 20 9 3 0 0 233
REL. 23.3 32.2 22.2 12.2 6.6 3.3 0.0 0.0 100.0 76.7 44.4 22.2 10.0 3.3 0.0 0.05.1
ID 23 32 22 24 33 83 0 0 218
ABS. 38 46 7 0 0 0 0 0 91 53 7 0 0 0 0 0 88
REL. 41.7 50.5 7.6 0.0 0.0 0.0 0.0 0.0 100.0 58.2 7.7 0.0 0.0 0.0 0.0 0.0 1.4
ID 41 50 7 0 0 0 0 0 100
ABS. 23 51 14 3 1 0 0 0 92 69 18 4 1 0 0 0 187
REL. 25.0 55.4 15.2 3.2 1.0 0.0 0.0 0.0100.0 75.0 19.6 4.3 1.1 0.0 0.0 0.0 30.9
ID 25 55 15 6 5 0 0 0 107
ABS. 14 26 15 16 12 3 0 0 86 72 46 31 15 3 0 0 226
REL 16.2 30.2 17.4 18.6 13.9 3.4 0.0 0.0100.0 83.7 53.5 36.0 17.4 3.5 0.0 0.015.11
ID 16 30 17 37 69 87 0 0 258
Year
ABS. 96 152 56 30 19 6 0 0 359 263 111 55 25 6 0 0 233
REL. 26.7 42.3 15.5 8.3 5.2 1.6 0.0 0.0100.0 73.3 30.9 15.3 7.0 1.7 0.0 0.0 5.1
ID 26 42 15 16 26 41 0 0 169

Note:

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