| 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 | 153 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 | 3 |
| February | 580 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 104 (Very high) | 0 (Low) | 215 (Very high) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 0 | 6 |
| March | 294 (Very high) | 0 (Low) | 27 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 19 (Medium) | 44 (Medium) | 2 (Low) | 120 (Very high) | 0 (Low) | 22 (Medium) | 5 (Low) | 1 (Low) | 30 (Medium) | 8 | 9 |
| April | 58 (Medium) | 2,232 (Very high) | 9 (Low) | 42 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 403 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 709 (Very high) | 2 (Low) | 77 (High) | 17 (Medium) | 3 (Low) | 311 (Very high) | 17 (Medium) | 3 (Low) | 42 (Medium) | 29 | 13 |
| May | 5 (Low) | 48 (Medium) | 164 (Very high) | 61 (High) | 156 (Medium) | 6 (Low) | 4 (Low) | 1 (Low) | 848 (Very high) | 0 (Low) | 2 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 98 (High) | 0 (Low) | 37 (Medium) | 0 (Low) | 5 (Low) | 235 (Very high) | 58 (High) | 2 (Low) | 3 (Low) | 53 | 17 |
| June | 11 (Low) | 0 (Low) | 150 (High) | 40 (Medium) | 1,104 (Very high) | 0 (Low) | 47 (Medium) | 1 (Low) | 55 (High) | 0 (Low) | 14 (Low) | 11 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 161 (Very high) | 0 (Low) | 21 (Medium) | 121 (Very high) | 11 (Low) | 0 (Low) | 6 (Low) | 62 | 14 |
| July | 5 (Low) | 0 (Low) | 53 (Medium) | 6 (Low) | 37 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 9 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 11 (Low) | 16 (Medium) | 20 (Medium) | 24 (Medium) | 4 (Low) | 0 (Low) | 6 (Low) | 8 | 6 |
| August | 2 (Low) | 3 (Low) | 12 (Low) | 4 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 29 (Medium) | 18 (Medium) | 2 (Low) | 0 (Low) | 3 (Low) | 7 | 6 |
| September | 27 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 20 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 3 | 3 |
| October | 99 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 | 4 |
| November | 32 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 87 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 3 |
| December | 97 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 | 4 |