| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 38 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |
| February | 105 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| March | 46 (Medium) | 39 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| April | 2 (Low) | 719 (Very high) | 5 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 64 (High) | 2 (Low) | 1 (Low) | 6 (Low) | 4 |
| May | 2 (Low) | 5 (Low) | 15 (Low) | 6 (Low) | 64 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 143 (Very high) | 2 (Low) | 1 (Low) | 3 (Low) | 6 |
| June | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 |
| July | 2 (Low) | 2 (Low) | 16 (Low) | 4 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 6 (Low) | 14 (Low) | 15 (Medium) | 1 (Low) | 0 (Low) | 5 (Low) | 175 |
| August | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 40 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 1 (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) | 2 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 2 |
| October | 11 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 |
| November | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |
| December | 10 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 |