Detailed overview of ambient air pollution valuis from individual stations


Year: 1999
Pollutant:WD-wind direction
Station:1028 - Nepomysl
Code:CZLNCMNEP
Institution:Czech Hydrometeorological Institute
Region:Severocesky
District:Louny
IHd: 150
Measure method:optoelectronic method
Unit:deg

Average daily concentrations

Day/
Month

12345678910111213141516171819202122232425262728293031XMaxN
1 58 100 204 179 153 152 213 216 177 69 162 226 228 236 208 186 232 132 150 147 163 157 147 172 207 219 227 200 281 209 219 181.53 280.52 31.00
2 236 238 245 234 240 230 221 209 188 204 272 277 283 186 193 221 ~ ~ 198 218 200 224 250 239 212 176 156 202 ~ ~ ~ 221.27 283.31 26.00
3 212 195 185 261 230 205 222 178 208 243 209 145 211 162 254 90 151 139 252 250 191 211 220 208 209 192 148 258 168 178 140 197.55 260.69 31.00
4 128 113 128 236 211 208 234 ~ 208 227 237 183 ~ 170 ~ 258 243 240 203 ~ 159 219 151 141 128 107 225 187 110 169 ~ 185.35 257.50 26.00
5 236 141 184 53 111 150 187 200 231 197 226 213 213 248 300 225 122 130 165 168 184 230 211 169 215 118 148 13 ~ ~ 40 173.28 299.56 29.00
6 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 243 141 80 119 202 138 226 282 267 192 292 271 235 156 112 156 198 229 212 209 ~ 197.95 291.78 20.00
7 235 249 202 146 197 222 271 257 328 167 216 115 189 211 195 214 144 111 127 156 164 165 ~ ~ ~ ~ ~ ~ 151 159 163 190.05 327.51 25.00
8 170 168 176 169 177 213 198 218 192 229 282 270 256 191 237 200 224 182 228 249 278 243 147 171 154 203 177 292 199 177 230 209.72 292.17 31.00
9 278 186 134 142 149 155 228 205 156 141 140 164 138 145 150 198 148 198 178 155 183 146 178 210 208 177 182 207 199 206 ~ 176.17 277.63 30.00
10 207 188 206 223 250 273 260 236 257 240 241 240 177 242 212 218 175 143 158 164 80 108 147 175 161 233 219 224 184 254 225 203.94 273.42 31.00
11 210 245 263 284 188 211 232 275 242 49 124 66 221 259 187 212 229 219 260 170 203 226 218 214 175 197 174 182 156 184 ~ 202.47 283.60 30.00
12 238 240 224 212 251 217 224 201 171 199 181 214 217 225 261 248 206 236 242 273 242 127 178 180 202 193 224 249 250 217 202 217.56 272.51 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 4 7 53 24 0 0 0 88 88 84 77 24 0 0 0 283
REL. 0.0 4.5 7.9 60.2 27.2 0.0 0.0 0.0 100.0 100.0 95.5 87.5 27.3 0.0 0.0 0.013.2
ID 0 4 7 120 136 0 0 0 269
ABS. 2 2 17 33 21 0 0 0 75 73 71 54 21 0 0 0 300
REL. 2.6 2.6 22.6 44.0 28.0 0.0 0.0 0.0 100.0 97.3 94.7 72.0 28.0 0.0 0.0 0.0 15.5
ID 2 2 22 88 140 0 0 0 256
ABS. 0 0 16 52 17 1 0 0 86 86 86 70 18 1 0 0 328
REL. 0.0 0.0 18.6 60.4 19.7 1.1 0.0 0.0100.0 100.0 100.0 81.4 20.9 1.2 0.0 0.0 9.7
ID 0 0 18 120 98 29 0 0 267
ABS. 1 2 5 51 33 0 0 0 92 91 89 84 33 0 0 0 284
REL 1.0 2.1 5.4 55.4 35.8 0.0 0.0 0.0100.0 98.9 96.7 91.3 35.9 0.0 0.0 0.0 4.11
ID 1 2 5 110 179 0 0 0 298
Year
ABS. 3 8 45 189 95 1 0 0 341 338 330 285 96 1 0 0 328
REL. 0.8 2.3 13.1 55.4 27.8 0.2 0.0 0.0100.0 99.1 96.8 83.6 28.2 0.3 0.0 0.0 9.7
ID 2 13 110 139 7 0 0 273

Note:

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