Detailed overview of ambient air pollution valuis from individual stations

Year: 1999
Pollutant:WD-wind direction
Station:1108 - Ondrejov
Code:CZPHCMOND
Institution:Czech Hydrometeorological Institute
Region:Stredocesky
District:Praha-vychod
IHd: 150
Measure method:optoelectronic method
Unit:deg

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 145 147 187 230 228 224 242 229 260 108 167 210 216 227 225 171 150 176 154 146 176 196 171 218 226 245 223 211 306 284 245 204.64 306.29 31.00
2 240 249 245 239 245 241 223 228 173 137 214 310 311 263 226 234 245 242 231 246 223 237 255 247 238 215 208 231 ~ ~ ~ 235.57 310.56 28.00
3 227 234 157 143 235 178 248 174 204 206 153 83 92 158 280 59 67 120 261 253 193 220 239 174 129 134 107 234 300 158 54 176.50 299.75 31.00
4 37 148 240 245 233 232 251 280 258 233 246 205 229 169 275 285 243 260 287 213 194 207 138 105 59 58 275 292 110 230 ~ 207.87 291.56 30.00
5 207 185 207 40 40 104 142 214 189 205 234 213 237 240 269 207 50 94 139 86 102 256 275 133 261 125 77 162 161 180 269 171.04 275.18 31.00
6 158 164 179 227 134 230 91 228 141 59 283 293 188 270 221 237 276 266 258 211 284 279 191 186 73 111 144 244 153 226 ~ 200.06 292.99 30.00
7 248 199 155 129 169 246 282 299 61 33 45 129 203 242 230 258 134 116 136 222 232 260 268 197 76 184 52 28 24 39 20 158.52 299.14 31.00
8 26 49 89 88 197 127 216 209 165 232 274 287 269 201 234 229 209 187 232 242 290 159 81 123 91 144 126 262 32 197 271 178.61 289.83 31.00
9 281 167 36 110 107 156 266 103 29 25 51 104 86 97 98 243 127 112 127 146 208 177 203 212 195 218 188 229 207 201 ~ 150.32 280.93 30.00
10 209 146 224 219 ~ 246 239 229 241 240 245 282 162 258 298 292 161 101 37 63 129 140 163 154 209 230 234 242 139 137 217 196.21 298.30 30.00
11 143 207 231 63 148 225 237 292 39 35 37 81 202 258 192 144 226 214 272 287 154 227 280 259 230 172 220 142 163 215 ~ 186.50 291.89 30.00
12 235 234 215 225 239 222 228 203 163 223 185 205 216 214 263 242 208 236 241 240 192 130 131 137 168 181 180 177 240 233 221 207.15 262.62 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- 50 51- 100 101- 150 151- 225 226- 300 301- 450 451- 600 over 600 50 100 150 225 300 450 600
ABS. 0 5 11 32 39 3 0 0 90 90 85 74 42 3 0 0 311
REL. 0.0 5.5 12.2 35.5 43.3 3.3 0.0 0.0 100.0 100.0 94.4 82.2 46.7 3.3 0.0 0.013.2
ID 0 5 12 71 216 83 0 0 388
ABS. 4 8 14 25 40 0 0 0 91 87 79 65 40 0 0 0 293
REL. 4.3 8.7 15.3 27.4 43.9 0.0 0.0 0.0 100.0 95.6 86.8 71.4 44.0 0.0 0.0 0.0 12.6
ID 4 8 15 54 219 0 0 0 303
ABS. 12 11 17 27 25 0 0 0 92 80 69 52 25 0 0 0 299
REL. 13.0 11.9 18.4 29.3 27.1 0.0 0.0 0.0100.0 87.0 75.0 56.5 27.2 0.0 0.0 0.0 8.7
ID 13 11 18 58 135 0 0 0 238
ABS. 4 3 13 35 36 0 0 0 91 87 84 71 36 0 0 0 298
REL 4.3 3.2 14.2 38.4 39.5 0.0 0.0 0.0100.0 95.6 92.3 78.0 39.6 0.0 0.0 0.015.10
ID 4 3 14 76 197 0 0 0 296
Year
ABS. 20 27 55 119 140 3 0 0 364 344 317 262 143 3 0 0 311
REL. 5.4 7.4 15.1 32.6 38.4 0.8 0.0 0.0100.0 94.5 87.1 72.0 39.3 0.8 0.0 0.0 13.2
ID 5 7 15 65 192 20 0 0 306

Note:

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