| 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 | 1,275 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 7 |
| February | 619 (Very high) | 0 (Low) | 15 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 171 (Very high) | 0 (Low) | 382 (Very high) | 9 (Low) | 21 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 9 (Low) | 0 | 15 |
| March | 1,252 (Very high) | 594 (Very high) | 10 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 36 (Medium) | 459 (Very high) | 37 (Medium) | 126 (Very high) | 650 (Very high) | 1 (Low) | 107 (Very high) | 5 (Low) | 29 (Medium) | 29 (Medium) | 6 | 33 |
| April | 44 (Medium) | 351 (Very high) | 32 (Medium) | 46 (Medium) | 41 (Low) | 21 (Medium) | 0 (Low) | 1 (Low) | 81 (High) | 1 (Low) | 1 (Low) | 4 (Low) | 5 (Low) | 10 (Low) | 0 (Low) | 5 (Low) | 176 (Very high) | 2 (Low) | 48 (Medium) | 13 (Low) | 3 (Low) | 573 (Very high) | 4 (Low) | 14 (Low) | 26 (Medium) | 22 | 99 |
| May | 18 (Low) | 4 (Low) | 104 (High) | 16 (Low) | 305 (High) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 49 (Medium) | 0 (Low) | 8 (Low) | 217 (Very high) | 5 (Low) | 2 (Low) | 5 (Low) | 13 | 49 |
| June | 12 (Low) | 1 (Low) | 32 (Medium) | 6 (Low) | 59 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 7 (Low) | 41 (Medium) | 3 (Low) | 0 (Low) | 5 (Low) | 16 | 28 |
| July | 1 (Low) | 1 (Low) | 6 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 43 | 42 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 24 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 13 | 19 |
| September | 4 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 10 |
| October | 24 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 | 8 |
| November | 8 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 4 |
| December | 80 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 4 |