| 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 | 1,024 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 (Low) | 25 (Medium) | 2 (Low) | 10 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 4 (Low) | 0 | 0 |
| February | 612 (Very high) | 1 (Low) | 18 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 100 (Very high) | 1 (Low) | 49 (Medium) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 0 | 1 |
| March | 527 (Very high) | 2,165 (Very high) | 12 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 11 (Low) | 25 (Medium) | 6 (Low) | 3 (Low) | 130 (Very high) | 1 (Low) | 46 (Medium) | 2 (Low) | 7 (Low) | 12 (Low) | 0 | 0 |
| April | 30 (Medium) | 2,959 (Very high) | 24 (Low) | 16 (Low) | 20 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 94 (High) | 1 (Low) | 75 (High) | 9 (Low) | 3 (Low) | 895 (Very high) | 16 (Medium) | 3 (Low) | 52 (High) | 7 | 2 |
| May | 48 (Medium) | 9 (Low) | 299 (Very high) | 22 (Medium) | 534 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 7 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 209 (Very high) | 0 (Low) | 7 (Low) | 751 (Very high) | 23 (Medium) | 2 (Low) | 12 (Low) | 3 | 3 |
| June | 15 (Low) | 1 (Low) | 160 (Very high) | 18 (Low) | 15 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 6 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 2 (Low) | 29 (Medium) | 21 (Medium) | 1 (Low) | 8 (Low) | 4 | 2 |
| July | 1 (Low) | 1 (Low) | 48 (Medium) | 3 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 5 (Low) | 37 (Medium) | 3 (Low) | 0 (Low) | 8 (Low) | 8 | 0 |
| August | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 0 |
| September | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| October | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| November | 6 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 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) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| December | 4 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |