Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Leyton]
This page requires JavaScript
(b) CONCENTRATION OP SULPHUR DIOXIDE EXPRESSED IN MICROGRAMMES PER CUBIC METRE
MONTH | MONTHLY AVERAGE | HIGHEST | DAILY | AVERAGE | LOWEST | DAILY | AVERAGE | ||
---|---|---|---|---|---|---|---|---|---|
1955/60 | 1960/61 | 1961/62 | 1955/60 | 1960/61 | 1961/62 | 1955/60 | 1960/61 | 1961/62 | |
April | 186 | 180 | 147 | 441 | 369 | 197 | 83 | 86 | 102 |
May | 109 | 143 | 105 | 223 | 363 | 177 | 37 | 31 | 34 |
June | 94 | 83 | 108 | 189 | 255 | 266 | 37 | 17 | 52 |
July | 83 | 77 | 79 | 157 | 112 | 169 | 34 | 49 | 39 |
August | 97 | 100 | 79 | 177 | 203 | 194 | 40 | 43 | 30 |
September | 106 | 103 | 127 | 217 | 155 | 285 | 43 | 57 | 54 |
SUMMER AVERAGE | 113 | 114 | 108 | - | - | - | - | - | - |
October | 235 | 200 | 178 | 566 | 340 | 484 | 106 | 86 | 82 |
November | 338 | 277 | 236 | 707 | 641 | 611 | 160 | 129 | 50 |
December | 381 | 337 | 303 | 1058 | 592 | 643 | 143 | 132 | 119 |
January | 355 | 269 | 992 | 629 | 149 | 137 | |||
February | 332 | 252 | 921 | 701 | 152 | 134 | |||
March | 246 | 280 | 480 | 769 | 114 | 123 | |||
WINTER AVERAGE | 315 | 269 | _ | - | - | - | - | - | |
YEARLY AVERAGE | 214 | 192 | - | - | - | - | - | - |
(39)