Detailed overview of ambient air pollution valuis from individual stations

Year: 1998
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 437 - Pha5-Svornosti
Code:CZ05HSSVO
Institution:Public Health Service
Region:Hlavni mesto Praha
District:Praha 5
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 157 ~ ~ 213 282 290 242 250 ~ ~ 290 458 332 282 310 ~ ~ 290 196 157 138 195 ~ ~ 374 363 324 362 212 ~ 272.24 458.00 21.00
2 ~ 289 420 778 352 387 ~ ~ 372 347 ~ 261 199 ~ ~ 226 252 319 285 295 ~ ~ 274 304 305 275 205 ~ ~ ~ ~ 323.42 778.00 19.00
3 ~ 203 186 193 181 190 ~ ~ 134 198 230 176 174 ~ ~ 198 147 186 141 117 ~ ~ 149 167 261 255 233 ~ ~ 229 271 191.77 271.00 22.00
4 237 203 223 ~ ~ 146 193 242 240 109 ~ ~ ~ 81 173 269 81 ~ ~ 122 29 165 118 89 ~ ~ 70 85 56 62 ~ 142.52 269.00 21.00
5 ~ ~ ~ 64 51 119 140 ~ ~ ~ 132 114 55 95 95 ~ ~ 112 140 82 107 118 ~ ~ 168 162 200 64 168 ~ ~ 115.05 200.00 19.00
6 170 167 ~ 141 151 ~ ~ 148 108 71 ~ 53 ~ ~ 89 124 178 107 141 ~ ~ 124 138 132 151 113 ~ ~ 181 158 ~ 132.25 181.00 20.00
7 186 184 154 ~ ~ ~ 129 115 180 124 ~ ~ 117 147 120 188 130 ~ ~ 50 103 65 101 86 ~ ~ 81 74 66 181 86 121.23 188.00 22.00
8 ~ ~ 80 150 75 89 105 ~ ~ 64 128 99 ~ ~ ~ ~ ~ ~ 86 108 68 ~ ~ 50 56 55 43 91 ~ ~ 94 84.76 150.00 17.00
9 140 139 119 94 ~ ~ 105 129 144 147 149 ~ ~ 77 95 113 142 62 ~ ~ 77 78 61 60 49 ~ ~ 90 73 43 ~ 99.36 149.00 22.00
10 24 23 ~ ~ 31 43 47 71 227 ~ ~ 54 143 136 128 131 ~ ~ 113 127 70 101 333 ~ ~ 299 136 ~ 185 37 ~ 117.10 333.00 21.00
11 ~ 164 570 280 277 310 ~ ~ 421 266 184 256 276 ~ ~ ~ 158 171 187 107 ~ ~ 264 369 191 ~ 458 ~ ~ 295 ~ 273.89 570.00 19.00
12 219 303 400 71 ~ ~ 173 123 131 232 183 ~ ~ 205 197 144 208 674 ~ ~ 391 487 564 ~ ~ ~ ~ 120 139 91 79 244.48 674.00 21.00

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 0 0 6 15 25 13 3 62 62 62 62 56 41 16 3 778
REL. 0.0 0.0 0.0 9.6 24.1 40.3 20.9 4.8 100.0 100.0 100.0 100.0 90.3 66.1 25.8 4.84.2
ID 0 0 0 19 120 1008 2620 3024 6793
ABS. 1 7 10 22 14 6 0 0 60 59 52 42 20 6 0 0 269
REL. 1.6 11.6 16.6 36.6 23.3 10.0 0.0 0.0 100.0 98.3 86.7 70.0 33.3 10.0 0.0 0.0 16.4
ID 1 11 16 73 116 250 0 0 470
ABS. 0 13 19 23 6 0 0 0 61 61 48 29 6 0 0 0 188
REL. 0.0 21.3 31.1 37.7 9.8 0.0 0.0 0.0100.0 100.0 78.7 47.5 9.8 0.0 0.0 0.0 16.7
ID 0 21 31 75 49 0 0 0 177
ABS. 3 4 5 14 10 13 6 6 61 58 54 49 35 25 12 6 674
REL 4.9 6.5 8.1 22.9 16.3 21.3 9.8 9.8100.0 95.1 88.5 80.3 57.4 41.0 19.7 9.818.12
ID 4 6 8 45 81 532 1229 6147 8057
Year
ABS. 4 24 34 65 45 44 19 9 244 240 216 182 117 72 28 9 778
REL. 1.6 9.8 13.9 26.6 18.4 18.0 7.7 3.6100.0 98.4 88.5 74.6 48.0 29.5 11.5 3.7 4.2
ID 1 9 13 53 92 450 973 2305 3900

Note:

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