| 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 | 2,234 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 512 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 | 3 |
| February | 494 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 727 (Very high) | 0 (Low) | 128 (Very high) | 1 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 45 (Medium) | 2 | 6 |
| March | 85 (Medium) | 7 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 29 (Medium) | 0 (Low) | 5 (Low) | 4 (Low) | 105 (Very high) | 2 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 33 (Medium) | 4 | 4 |
| April | 10 (Low) | 384 (Very high) | 12 (Low) | 38 (Medium) | 9 (Low) | 53 (High) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 7 (Low) | 25 (Medium) | 0 (Low) | 173 (Very high) | 70 (High) | 2 (Low) | 260 (Very high) | 9 (Low) | 8 (Low) | 34 (Medium) | 12 | 18 |
| May | 77 (Medium) | 7 (Low) | 391 (Very high) | 299 (Very high) | 263 (High) | 3 (Low) | 0 (Low) | 1 (Low) | 124 (Very high) | 1 (Low) | 3 (Low) | 9 (Low) | 1 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 948 (Very high) | 1 (Low) | 4 (Low) | 2,586 (Very high) | 98 (High) | 5 (Low) | 24 (Medium) | 114 | 33 |
| June | 31 (Medium) | 2 (Low) | 408 (Very high) | 165 (Very high) | 478 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 10 (Low) | 29 (Medium) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 545 (Very high) | 0 (Low) | 3 (Low) | 456 (Very high) | 47 (Medium) | 1 (Low) | 30 (Medium) | 57 | 27 |
| July | 2 (Low) | 2 (Low) | 25 (Low) | 8 (Low) | 7 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 9 (Low) | 57 (High) | 4 (Low) | 0 (Low) | 8 (Low) | 9 | 18 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 11 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 4 | 13 |
| September | 2 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 26 (Medium) | 14 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 3 | 13 |
| October | 4 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 5 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 5 |
| November | 11 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 3 |
| December | 19 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 2 |