Detailed overview of ambient air pollution valuis from individual stations

Year: 2002
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 775 - Pha5-Mlynarka
Code:CZ05CMMLY
Institution:Czech Hydrometeorological Institute
Region:Prague
District:Praha 5
IHd: 100
Measure method:chemiluminescence
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 30 48 179 282 343 141 174 220 67 80 85 104 119 151 92 69 150 77 50 31 57 127 73 57 61 22 29 29 49 154 113 105.37 343.09 31.00
2 136 240 210 181 138 195 93 46 26 26 31 39 75 80 120 132 213 107 41 33 62 37 29 32 94 30 41 55 ~ ~ ~ 90.73 239.96 28.00
3 119 45 43 190 254 123 36 157 59 110 198 243 217 74 84 78 139 113 54 70 73 64 36 43 67 84 98 232 247 159 145 117.90 254.46 31.00
4 152 125 68 67 56 38 84 108 66 65 79 65 52 52 72 92 98 71 80 56 54 118 72 84 70 39 32 58 38 97 ~ 73.48 152.00 30.00
5 89 89 86 41 50 75 79 52 56 54 68 79 100 46 77 88 55 46 48 72 76 64 61 53 38 60 66 65 61 91 56 65.91 99.82 31.00
6 39 73 85 75 50 66 79 53 79 64 80 83 56 88 51 76 90 84 74 59 61 57 43 80 77 76 50 46 35 57 ~ 66.22 90.24 30.00
7 74 65 41 36 43 26 45 72 66 46 92 84 38 33 70 ~ 67 47 54 52 37 47 48 46 65 51 56 85 98 74 69 57.56 97.69 30.00
8 95 91 65 47 75 85 74 78 97 59 46 ~ ~ 49 61 66 60 78 90 88 59 114 114 75 88 90 68 105 114 130 63 80.11 129.60 29.00
9 63 95 93 109 85 97 95 103 122 77 88 94 130 52 41 86 80 108 148 163 85 66 60 43 75 67 58 88 140 241 ~ 94.94 241.43 30.00
10 199 206 122 84 32 34 64 90 79 68 54 41 80 86 166 205 79 67 51 137 179 222 44 158 44 24 24 ~ ~ 225 139 103.56 224.74 29.00
11 169 54 69 108 79 109 148 68 33 121 105 249 164 148 268 231 149 217 102 142 115 101 142 162 279 179 143 84 111 71 ~ 137.39 278.78 30.00
12 173 153 120 121 97 86 68 66 124 149 259 99 98 91 87 134 191 97 277 273 266 124 98 71 43 48 97 106 66 63 73 123.23 276.92 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. 12 21 19 16 11 10 1 0 90 78 57 38 22 11 1 0 343
REL. 13.3 23.3 21.1 17.7 12.2 11.1 1.1 0.0 100.0 86.7 63.3 42.2 24.4 12.2 1.1 0.05.1
ID 13 23 21 35 61 277 138 0 571
ABS. 1 45 41 3 1 0 0 0 91 90 45 4 1 0 0 0 152
REL. 1.0 49.4 45.0 3.2 1.0 0.0 0.0 0.0 100.0 98.9 49.5 4.4 1.1 0.0 0.0 0.0 1.4
ID 1 49 45 6 5 0 0 0 107
ABS. 2 35 38 12 1 1 0 0 89 87 52 14 2 1 0 0 241
REL. 2.2 39.3 42.6 13.4 1.1 1.1 0.0 0.0100.0 97.8 58.4 15.7 2.2 1.1 0.0 0.0 30.9
ID 2 39 42 26 5 28 0 0 144
ABS. 4 13 25 24 11 13 0 0 90 86 73 48 24 13 0 0 279
REL 4.4 14.4 27.7 26.6 12.2 14.4 0.0 0.0100.0 95.6 81.1 53.3 26.7 14.4 0.0 0.025.11
ID 4 14 27 53 61 361 0 0 522
Year
ABS. 19 114 123 55 24 24 1 0 360 341 227 104 49 25 1 0 343
REL. 5.2 31.6 34.1 15.2 6.6 6.6 0.2 0.0100.0 94.7 63.1 28.9 13.6 6.9 0.3 0.0 5.1
ID 5 31 34 30 33 166 34 0 336

Note:

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