| 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 | 1,584 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 48 (Medium) | 0 (Low) | 20 (Medium) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 13 | 1 |
| February | 1,953 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 106 (Very high) | 0 (Low) | 199 (Very high) | 2 (Low) | 114 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 2 | 1 |
| March | 211 (Very high) | 5,390 (Very high) | 6 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 142 (Very high) | 6 (Low) | 123 (Very high) | 346 (Very high) | 1 (Low) | 33 (Medium) | 2 (Low) | 14 (Low) | 43 (Medium) | 16 | 2 |
| April | 16 (Low) | 2,137 (Very high) | 24 (Low) | 104 (Very high) | 32 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 2 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 235 (Very high) | 7 (Low) | 220 (Very high) | 3 (Low) | 3 (Low) | 651 (Very high) | 12 (Low) | 5 (Low) | 50 (High) | 24 | 9 |
| May | 10 (Low) | 17 (Low) | 239 (Very high) | 160 (Very high) | 189 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 1 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 576 (Very high) | 1 (Low) | 5 (Low) | 477 (Very high) | 65 (High) | 1 (Low) | 11 (Low) | 27 | 13 |
| June | 12 (Low) | 4 (Low) | 94 (High) | 22 (Medium) | 101 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 19 (Medium) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 284 (Very high) | 0 (Low) | 3 (Low) | 227 (Very high) | 15 (Medium) | 0 (Low) | 15 (Medium) | 18 | 2 |
| July | 3 (Low) | 1 (Low) | 44 (Medium) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 10 | 1 |
| August | 1 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 1 |
| September | 3 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 1 |
| October | 88 (Medium) | 1 (Low) | 1 (Low) | 0 (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) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 | 1 |
| November | 263 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 | 1 |
| December | 1,572 (Very high) | 4 (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) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 | 1 |