| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 235 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |
| February | 931 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 264 (Very high) | 1 (Low) | 50 (High) | 1 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 14 (Low) | 7 |
| March | 891 (Very high) | 363 (Very high) | 15 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 4 (Low) | 33 (Medium) | 16 (Medium) | 14 (Low) | 87 (High) | 1 (Low) | 12 (Low) | 5 (Low) | 2 (Low) | 40 (Medium) | 201 |
| April | 16 (Low) | 183 (High) | 32 (Medium) | 22 (Medium) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 234 (Very high) | 7 (Low) | 36 (Medium) | 6 (Low) | 4 (Low) | 262 (Very high) | 21 (Medium) | 6 (Low) | 9 (Low) | 388 |
| May | 5 (Low) | 9 (Low) | 297 (Very high) | 20 (Medium) | 123 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 13 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 27 (Medium) | 1 (Low) | 41 (Medium) | 0 (Low) | 10 (Low) | 344 (Very high) | 26 (Medium) | 0 (Low) | 9 (Low) | 320 |
| June | 1 (Low) | 1 (Low) | 183 (Very high) | 5 (Low) | 282 (High) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 12 (Low) | 34 (Medium) | 9 (Low) | 0 (Low) | 2 (Low) | 31 |
| July | 1 (Low) | 0 (Low) | 25 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 14 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 |
| September | 3 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 17 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| October | 20 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 |
| November | 18 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 |
| December | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 |