Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 437 - Pha5-Svornosti
Code:CZ05HSSVO
Institution:Public Health Service
Region:Prague
District:Praha 5
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ ~ ~ ~ ~ ~ ~ 290 210 155 122 139 ~ ~ 165 110 152 185 169 ~ ~ 114 143 101 140 185 ~ ~ 247 147 208 165.67 290.00 18.00
2 164 294 ~ ~ 243 202 199 258 278 ~ ~ 269 198 141 208 275 ~ ~ 134 82 102 87 108 ~ ~ 149 104 224 ~ ~ ~ 185.95 294.00 20.00
3 452 188 ~ ~ 112 166 199 129 191 ~ ~ 264 325 203 258 254 ~ ~ 184 124 103 164 172 ~ ~ 116 86 61 95 149 ~ 181.59 452.00 22.00
4 ~ 172 159 109 155 129 ~ ~ 86 164 88 92 89 ~ ~ ~ 237 164 101 154 ~ ~ 190 202 195 171 341 ~ ~ 303 ~ 165.05 341.00 20.00
5 ~ 76 127 141 ~ ~ 91 ~ 64 144 109 ~ ~ 153 192 349 263 358 ~ ~ ~ 126 159 242 82 ~ ~ 285 229 281 217 184.40 358.00 20.00
6 142 ~ ~ 240 74 279 327 238 ~ ~ 267 296 182 342 416 ~ ~ 269 230 240 274 231 ~ ~ 296 359 77 120 98 ~ ~ 237.95 416.00 21.00
7 ~ 99 148 ~ ~ ~ ~ ~ 120 169 104 77 41 ~ ~ 114 71 56 48 76 ~ ~ 149 138 120 132 138 ~ ~ 200 112 111.16 200.00 19.00
8 88 51 46 ~ ~ 18 21 155 213 175 ~ ~ 137 71 71 168 112 ~ ~ 66 191 74 134 116 ~ ~ 166 ~ 145 81 181 112.73 213.00 22.00
9 ~ ~ 179 247 130 188 222 ~ ~ 159 358 175 204 207 ~ ~ 135 171 169 186 257 ~ ~ 165 193 152 165 ~ ~ ~ ~ 192.74 358.00 19.00
10 161 231 78 59 49 ~ ~ ~ 233 137 184 183 ~ ~ 319 253 146 200 220 ~ ~ 231 142 231 239 193 ~ ~ 129 192 146 179.82 319.00 22.00
11 100 67 ~ ~ 310 166 39 108 38 ~ ~ 493 413 191 86 ~ ~ ~ 408 184 72 186 99 ~ ~ 300 362 217 239 186 ~ 203.05 493.00 21.00
12 ~ ~ 229 346 214 160 119 ~ ~ 162 335 96 67 130 ~ ~ 116 103 129 69 108 ~ ~ ~ ~ ~ 115 83 ~ ~ 70 147.28 346.00 18.00

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. 0 1 4 20 16 17 1 1 60 60 59 55 35 19 2 1 452
REL. 0.0 1.6 6.6 33.3 26.6 28.3 1.6 1.6 100.0 100.0 98.3 91.7 58.3 31.7 3.3 1.71.3
ID 0 1 6 66 133 708 208 1041 2166
ABS. 0 1 10 10 13 19 7 1 61 61 60 50 40 27 8 1 416
REL. 0.0 1.6 16.3 16.3 21.3 31.1 11.4 1.6 100.0 100.0 98.4 82.0 65.6 44.3 13.1 1.6 15.6
ID 0 1 16 32 106 778 1434 1024 3395
ABS. 2 6 9 17 19 6 1 0 60 58 52 43 26 7 1 0 358
REL. 3.3 10.0 15.0 28.3 31.6 10.0 1.6 0.0100.0 96.7 86.7 71.7 43.3 11.7 1.7 0.0 11.9
ID 3 10 15 56 158 250 208 0 701
ABS. 0 4 11 13 13 12 5 3 61 61 57 46 33 20 8 3 493
REL 0.0 6.5 18.0 21.3 21.3 19.6 8.1 4.9100.0 100.0 93.4 75.4 54.1 32.8 13.1 4.912.11
ID 0 6 18 42 106 491 1024 3073 4763
Year
ABS. 2 12 34 60 61 54 14 5 242 240 228 194 134 73 19 5 493
REL. 0.8 4.9 14.0 24.7 25.2 22.3 5.7 2.0100.0 99.2 94.2 80.2 55.4 30.2 7.9 2.112.11
ID 4 14 49 126 557 723 1291 2767

Note:

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