| 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 | 1,150 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 46 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 71 (High) | 0 (Low) | 12 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 | 0 |
| February | 431 (Very high) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 111 (Very high) | 0 (Low) | 89 (High) | 1 (Low) | 16 (Medium) | 1 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 9 (Low) | 0 | 1 |
| March | 356 (Very high) | 1 (Low) | 6 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 22 (Medium) | 2 (Low) | 61 (High) | 0 (Low) | 26 (Medium) | 5 (Low) | 3 (Low) | 10 (Low) | 2 | 1 |
| April | 9 (Low) | 1,230 (Very high) | 12 (Low) | 13 (Low) | 12 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 158 (Very high) | 1 (Low) | 13 (Low) | 10 (Low) | 3 (Low) | 102 (Very high) | 17 (Medium) | 10 (Low) | 15 (Medium) | 1 | 1 |
| May | 12 (Low) | 29 (Low) | 297 (Very high) | 105 (Very high) | 99 (Medium) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 8 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 94 (High) | 2 (Low) | 2 (Low) | 365 (Very high) | 39 (Medium) | 1 (Low) | 19 (Medium) | 3 | 2 |
| June | 25 (Low) | 3 (Low) | 278 (Very high) | 21 (Medium) | 779 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 19 (Medium) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 293 (Very high) | 24 (Medium) | 6 (Low) | 110 (Very high) | 23 (Medium) | 1 (Low) | 9 (Low) | 3 | 2 |
| July | 9 (Low) | 3 (Low) | 124 (High) | 6 (Low) | 70 (Medium) | 2 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 51 (High) | 0 (Low) | 4 (Low) | 43 (Medium) | 4 (Low) | 0 (Low) | 5 (Low) | 2 | 1 |
| August | 2 (Low) | 2 (Low) | 4 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 9 (Low) | 9 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 | 2 |
| September | 2 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 22 (Medium) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 8 |
| October | 25 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 0 |
| November | 3 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| December | 42 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |