| 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 | 1,597 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1,248 (Very high) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 1 |
| February | 3,513 (Very high) | 0 (Low) | 11 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 1,825 (Very high) | 2 (Low) | 59 (High) | 3 (Low) | 20 (Medium) | 1 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 14 (Low) | 1 | 2 |
| March | 310 (Very high) | 143 (High) | 12 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 170 (Very high) | 10 (Low) | 11 (Low) | 55 (High) | 89 (High) | 1 (Low) | 13 (Low) | 0 (Low) | 9 (Low) | 5 (Low) | 8 | 6 |
| April | 36 (Medium) | 82 (Medium) | 11 (Low) | 18 (Low) | 1 (Low) | 13 (Low) | 0 (Low) | 7 (Low) | 90 (High) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 10 (Low) | 16 (Medium) | 2 (Low) | 157 (Very high) | 15 (Medium) | 3 (Low) | 225 (Very high) | 3 (Low) | 10 (Low) | 6 (Low) | 17 | 6 |
| May | 79 (Medium) | 11 (Low) | 91 (High) | 62 (High) | 40 (Low) | 6 (Low) | 30 (Medium) | 0 (Low) | 276 (Very high) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 579 (Very high) | 1 (Low) | 3 (Low) | 3,101 (Very high) | 58 (High) | 2 (Low) | 10 (Low) | 32 | 19 |
| June | 23 (Low) | 1 (Low) | 49 (Medium) | 29 (Medium) | 28 (Low) | 1 (Low) | 96 (High) | 0 (Low) | 16 (Medium) | 0 (Low) | 9 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 747 (Very high) | 0 (Low) | 10 (Low) | 583 (Very high) | 14 (Low) | 2 (Low) | 12 (Low) | 12 | 7 |
| July | 4 (Low) | 1 (Low) | 20 (Low) | 8 (Low) | 6 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 11 (Low) | 5 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 9 (Low) | 100 (Very high) | 5 (Low) | 1 (Low) | 3 (Low) | 6 | 4 |
| August | 5 (Low) | 1 (Low) | 9 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 10 (Low) | 22 (Medium) | 1 (Low) | 0 (Low) | 3 (Low) | 2 | 4 |
| September | 2 (Low) | 3 (Low) | 14 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 6 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 | 3 |
| October | 3 (Low) | 0 (Low) | 27 (Low) | 1 (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) | 2 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| November | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| December | 372 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 241 (Very high) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 15 (Medium) | 0 (Low) | 1 (Low) | 3 (Low) | 0 | 2 |