| 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 | 1,072 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 113 (Very high) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 | 2 |
| February | 1,312 (Very high) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 225 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 322 (Very high) | 0 (Low) | 50 (High) | 2 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 0 | 2 |
| March | 399 (Very high) | 418 (Very high) | 16 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 16 (Medium) | 12 (Low) | 152 (Very high) | 1 (Low) | 3 (Low) | 4 (Low) | 23 (Medium) | 32 (Medium) | 4 | 7 |
| April | 13 (Low) | 1,702 (Very high) | 24 (Low) | 61 (High) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 83 (High) | 3 (Low) | 29 (Medium) | 62 (High) | 6 (Low) | 249 (Very high) | 12 (Low) | 8 (Low) | 24 (Medium) | 10 | 11 |
| May | 27 (Low) | 26 (Low) | 386 (Very high) | 164 (Very high) | 256 (High) | 13 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 16 (Medium) | 2 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 45 (Medium) | 1 (Low) | 399 (Very high) | 17 (Medium) | 9 (Low) | 1,536 (Very high) | 48 (Medium) | 6 (Low) | 31 (Medium) | 35 | 23 |
| June | 48 (Medium) | 5 (Low) | 314 (Very high) | 125 (Very high) | 304 (High) | 7 (Low) | 6 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 13 (Low) | 21 (Medium) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 466 (Very high) | 1 (Low) | 14 (Low) | 369 (Very high) | 73 (High) | 1 (Low) | 22 (Medium) | 21 | 30 |
| July | 8 (Low) | 2 (Low) | 179 (Very high) | 11 (Low) | 12 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 8 (Low) | 17 (Medium) | 4 (Low) | 0 (Low) | 6 (Low) | 9 | 16 |
| August | 2 (Low) | 1 (Low) | 8 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 12 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 4 | 2 |
| September | 2 (Low) | 3 (Low) | 10 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 11 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 | 2 |
| October | 15 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| November | 6 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 | 4 |
| December | 72 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 2 |