| 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 | 1,805 (Very high) | 2 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 103 (Very high) | 0 (Low) | 78 (High) | 1 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 3 |
| February | 319 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 33 (Medium) | 3 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 4 |
| March | 505 (Very high) | 4 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 145 (Very high) | 1 (Low) | 44 (Medium) | 3 (Low) | 8 (Low) | 1 (Low) | 6 |
| April | 10 (Low) | 114 (High) | 50 (Medium) | 15 (Low) | 1 (Low) | 58 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 115 (Very high) | 36 (Medium) | 1 (Low) | 70 (High) | 8 (Low) | 11 (Low) | 4 (Low) | 10 |
| May | 18 (Low) | 9 (Low) | 107 (High) | 25 (Medium) | 40 (Low) | 12 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 84 (High) | 0 (Low) | 0 (Low) | 714 (Very high) | 32 (Medium) | 2 (Low) | 6 (Low) | 37 |
| June | 24 (Low) | 0 (Low) | 184 (Very high) | 70 (High) | 40 (Low) | 5 (Low) | 52 (High) | 0 (Low) | 0 (Low) | 3 (Low) | 6 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 230 (Very high) | 0 (Low) | 2 (Low) | 529 (Very high) | 50 (High) | 0 (Low) | 7 (Low) | 12 |
| July | 1 (Low) | 0 (Low) | 46 (Medium) | 8 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 4 |
| August | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 |
| September | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 |
| October | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| November | 2 (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) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 9 (Low) | 0 (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) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 |