| 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 | 567 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 128 (Very high) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 4 | 5 |
| February | 1,343 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 274 (Very high) | 0 (Low) | 45 (Medium) | 2 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 2 | 2 |
| March | 203 (Very high) | 3,419 (Very high) | 15 (Low) | 30 (Medium) | 0 (Low) | 27 (Medium) | 0 (Low) | 2 (Low) | 48 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 7 (Low) | 1 (Low) | 13 (Low) | 28 (Medium) | 11 (Low) | 51 (High) | 353 (Very high) | 1 (Low) | 138 (Very high) | 11 (Low) | 18 (Medium) | 60 (High) | 33 | 22 |
| April | 37 (Medium) | 653 (Very high) | 42 (Medium) | 58 (High) | 296 (High) | 28 (Medium) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 12 (Low) | 1 (Low) | 3 (Low) | 86 (High) | 1 (Low) | 190 (Very high) | 26 (Medium) | 3 (Low) | 1,996 (Very high) | 18 (Medium) | 14 (Low) | 30 (Medium) | 42 | 21 |
| May | 33 (Medium) | 15 (Low) | 75 (Medium) | 45 (Medium) | 825 (Very high) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 294 (Very high) | 1 (Low) | 6 (Low) | 707 (Very high) | 14 (Low) | 5 (Low) | 10 (Low) | 40 | 28 |
| June | 4 (Low) | 1 (Low) | 96 (High) | 353 (Very high) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 7 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 6 (Low) | 41 (Medium) | 22 (Medium) | 2 (Low) | 28 (Medium) | 22 | 8 |
| July | 5 (Low) | 1 (Low) | 59 (Medium) | 104 (Very high) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 19 (Medium) | 7 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 20 (Medium) | 9 (Low) | 8 (Low) | 0 (Low) | 14 (Low) | 16 | 7 |
| August | 1 (Low) | 1 (Low) | 8 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 6 | 6 |
| September | 33 (Medium) | 6 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 3 | 4 |
| October | 40 (Medium) | 5 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 36 (Medium) | 1 (Low) | 0 (Low) | 18 (Medium) | 4 | 10 |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |