Detailed overview of ambient air pollution valuis from individual stations

Year: 2001
Pollutant:NOx-nitrogen oxides(oxides of nitrogen)
Station: 446 - Pha8-Sokolovska
Code:CZ08HSSOK
Institution:Public Health Service
Region:Prague
District:Praha 8
IHd: 100
Measure method:trithanolamine spectophotometry
Unit:ug/m^3

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 ~ 144 135 266 146 ~ ~ 53 382 157 174 ~ ~ ~ 273 198 66 175 196 ~ ~ 101 70 121 121 99 ~ ~ 104 91 52 148.76 382.00 21.00
2 50 50 ~ ~ 155 161 189 350 345 ~ ~ 330 176 178 414 351 ~ ~ 321 313 199 264 397 ~ ~ 229 111 96 ~ ~ ~ 233.95 414.00 20.00
3 301 157 ~ ~ 178 509 262 216 195 ~ ~ 204 168 170 131 129 ~ ~ 105 145 120 154 169 ~ ~ 76 108 35 85 134 ~ 170.50 509.00 22.00
4 ~ 68 102 148 106 127 ~ ~ 104 105 151 80 68 ~ ~ ~ 132 84 84 142 ~ ~ 129 253 77 152 134 ~ ~ 43 ~ 114.45 253.00 20.00
5 ~ 86 48 104 ~ ~ 57 ~ 84 100 76 ~ ~ 48 53 60 47 33 ~ ~ 91 79 82 85 59 ~ ~ 30 78 74 116 70.95 116.00 21.00
6 166 ~ ~ 15 131 113 83 115 ~ ~ 102 112 58 116 54 ~ ~ 148 122 161 208 222 ~ ~ 154 115 112 120 143 ~ ~ 122.38 222.00 21.00
7 ~ 120 24 65 ~ ~ ~ ~ 40 27 44 33 44 ~ ~ 168 204 96 80 92 ~ ~ 110 124 88 94 146 ~ ~ 101 15 85.75 204.00 20.00
8 130 50 59 ~ ~ 61 70 90 59 34 ~ ~ 54 94 51 109 49 ~ ~ 85 109 94 134 65 ~ ~ 54 69 81 61 ~ 75.55 134.00 22.00
9 ~ ~ ~ 50 111 110 76 ~ ~ 56 63 105 115 103 ~ ~ 56 ~ 68 101 64 ~ ~ 47 58 54 54 ~ ~ ~ ~ 75.94 115.00 17.00
10 44 38 64 95 98 ~ ~ 81 83 83 54 116 ~ ~ 113 35 40 ~ 110 ~ ~ 112 339 248 241 169 ~ ~ 216 283 164 128.45 339.00 22.00
11 388 118 ~ ~ 163 547 153 128 146 ~ ~ 289 ~ 135 257 257 ~ ~ 184 280 ~ 290 78 ~ ~ 239 313 250 266 178 ~ 232.95 547.00 20.00
12 ~ ~ 110 155 92 120 149 ~ ~ 201 404 145 135 152 ~ ~ 128 81 141 28 200 ~ ~ ~ ~ ~ 151 171 ~ ~ 115 148.78 404.00 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 6 6 15 18 7 9 2 63 63 57 51 36 18 11 2 509
REL. 0.0 9.5 9.5 23.8 28.5 11.1 14.2 3.1 100.0 100.0 90.5 81.0 57.1 28.6 17.5 3.26.3
ID 0 9 9 47 142 277 1785 1984 4257
ABS. 3 10 17 24 5 3 0 0 62 59 49 32 8 3 0 0 253
REL. 4.8 16.1 27.4 38.7 8.0 4.8 0.0 0.0 100.0 95.2 79.0 51.6 12.9 4.8 0.0 0.0 24.4
ID 4 16 27 77 40 120 0 0 287
ABS. 4 24 14 15 1 1 0 0 591 55 31 17 2 1 0 0 204
REL. 6.7 40.6 23.7 25.4 1.6 1.6 0.0 0.0100.0 93.2 52.5 28.8 3.4 1.7 0.0 0.0 17.7
ID 6 40 23 50 8 42 0 0 172
ABS. 1 6 8 16 11 13 3 2 60 59 53 45 29 18 5 2 547
REL 1.6 10.0 13.3 26.6 18.3 21.6 5.0 3.3100.0 98.3 88.3 75.0 48.3 30.0 8.3 3.3 6.11
ID 1 10 13 53 91 541 625 2083 3420
Year
ABS. 8 46 45 70 35 24 12 4 244 236 190 145 75 40 16 4 547
REL. 3.2 18.8 18.4 28.6 14.3 9.8 4.9 1.6100.0 96.7 77.9 59.4 30.7 16.4 6.6 1.6 6.11
ID 3 18 18 57 71 245 614 1024 2054

Note:

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