| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 371 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 69 (High) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 | 3 |
| February | 1,090 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 29 (Medium) | 0 (Low) | 81 (High) | 1 (Low) | 52 (High) | 0 (Low) | 3 (Low) | 4 (Low) | 2 (Low) | 14 (Low) | 14 | 11 |
| March | 79 (Medium) | 1,610 (Very high) | 4 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 89 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 113 (Very high) | 5 (Low) | 64 (High) | 26 (Medium) | 1 (Low) | 21 (Medium) | 1 (Low) | 3 (Low) | 22 (Medium) | 15 | 16 |
| April | 19 (Low) | 291 (High) | 129 (High) | 69 (High) | 50 (Medium) | 36 (Medium) | 2 (Low) | 0 (Low) | 70 (High) | 0 (Low) | 4 (Low) | 19 (Medium) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 366 (Very high) | 0 (Low) | 134 (Very high) | 0 (Low) | 3 (Low) | 566 (Very high) | 32 (Medium) | 4 (Low) | 2 (Low) | 48 | 19 |
| May | 19 (Low) | 13 (Low) | 685 (Very high) | 139 (Very high) | 919 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 71 (High) | 0 (Low) | 8 (Low) | 17 (Medium) | 0 (Low) | 21 (Medium) | 2 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 344 (Very high) | 0 (Low) | 21 (Medium) | 691 (Very high) | 46 (Medium) | 7 (Low) | 3 (Low) | 115 | 30 |
| June | 6 (Low) | 74 (Medium) | 96 (High) | 50 (High) | 269 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 13 (Low) | 10 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 183 (Very high) | 0 (Low) | 12 (Low) | 217 (Very high) | 13 (Low) | 0 (Low) | 5 (Low) | 23 | 26 |
| July | 2 (Low) | 0 (Low) | 43 (Medium) | 10 (Low) | 7 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 11 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 9 | 10 |
| August | 3 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 43 (Medium) | 7 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 6 | 7 |
| September | 1 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 23 (Medium) | 10 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 3 | 9 |
| October | 29 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 4 |
| November | 79 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 2 | 7 |
| December | 199 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 1 | 3 |