| 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 | 692 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 77 (High) | 0 (Low) | 28 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 | 3 |
| February | 584 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 152 (Very high) | 0 (Low) | 167 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 13 (Low) | 0 | 2 |
| March | 645 (Very high) | 2 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 21 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 7 (Low) | 32 (Medium) | 11 (Low) | 142 (Very high) | 1 (Low) | 3 (Low) | 4 (Low) | 6 (Low) | 8 (Low) | 2 | 7 |
| April | 16 (Low) | 1,309 (Very high) | 26 (Low) | 20 (Medium) | 1 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 27 (Medium) | 10 (Low) | 43 (Medium) | 32 (Medium) | 7 (Low) | 139 (Very high) | 16 (Medium) | 24 (Medium) | 59 (High) | 13 | 15 |
| May | 50 (Medium) | 71 (Medium) | 228 (Very high) | 92 (High) | 94 (Medium) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 10 (Low) | 2 (Low) | 1 (Low) | 30 (Medium) | 1 (Low) | 302 (Very high) | 4 (Low) | 3 (Low) | 726 (Very high) | 41 (Medium) | 1 (Low) | 14 (Low) | 39 | 53 |
| June | 76 (Medium) | 9 (Low) | 324 (Very high) | 48 (Medium) | 480 (Very high) | 1 (Low) | 11 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 13 (Low) | 1 (Low) | 8 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 283 (Very high) | 0 (Low) | 10 (Low) | 192 (Very high) | 16 (Medium) | 2 (Low) | 9 (Low) | 47 | 12 |
| July | 87 (Medium) | 11 (Low) | 140 (High) | 12 (Low) | 59 (Medium) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 8 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 96 (High) | 1 (Low) | 11 (Low) | 44 (Medium) | 7 (Low) | 4 (Low) | 14 (Low) | 16 | 7 |
| August | 5 (Low) | 1 (Low) | 8 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 15 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 7 | 4 |
| September | 6 (Low) | 1 (Low) | 7 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 27 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 6 | 3 |
| October | 24 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 2 |
| November | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 2 |
| December | 39 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |