| 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 | 739 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 16 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 2 |
| February | 3,161 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 52 (High) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 1 | 4 |
| March | 983 (Very high) | 790 (Very high) | 8 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 41 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 3 (Low) | 2 (Low) | 69 (High) | 1 (Low) | 11 (Low) | 6 (Low) | 4 (Low) | 23 (Medium) | 13 | 6 |
| April | 19 (Low) | 909 (Very high) | 22 (Low) | 10 (Low) | 2 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 181 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 105 (Very high) | 2 (Low) | 76 (High) | 10 (Low) | 3 (Low) | 338 (Very high) | 21 (Medium) | 8 (Low) | 54 (High) | 6 | 13 |
| May | 9 (Low) | 17 (Low) | 138 (High) | 15 (Low) | 278 (High) | 1 (Low) | 6 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 180 (Very high) | 0 (Low) | 6 (Low) | 372 (Very high) | 24 (Medium) | 1 (Low) | 4 (Low) | 12 | 3 |
| June | 4 (Low) | 4 (Low) | 79 (Medium) | 19 (Low) | 10 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 18 (Medium) | 4 (Low) | 0 (Low) | 3 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 42 (Medium) | 0 (Low) | 5 (Low) | 12 (Low) | 14 (Low) | 0 (Low) | 5 (Low) | 14 | 2 |
| July | 1 (Low) | 5 (Low) | 21 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 5 | 4 |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 13 | 2 |
| September | 1 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 2 |
| October | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| November | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| December | 3 (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) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |