| 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 | 151 (High) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| February | 218 (Very high) | 1 (Low) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 60 (High) | 0 (Low) | 57 (High) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 6 (Low) | 1 |
| March | 715 (Very high) | 955 (Very high) | 19 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 11 (Low) | 3 (Low) | 30 (Medium) | 2 (Low) | 165 (Very high) | 0 (Low) | 6 (Low) | 3 (Low) | 3 (Low) | 55 (High) | 12 |
| April | 17 (Low) | 1,342 (Very high) | 31 (Medium) | 60 (High) | 1 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 121 (Very high) | 0 (Low) | 40 (Medium) | 17 (Medium) | 1 (Low) | 192 (Very high) | 21 (Medium) | 17 (Medium) | 29 (Medium) | 24 |
| May | 32 (Medium) | 11 (Low) | 460 (Very high) | 92 (High) | 428 (Very high) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 17 (Medium) | 0 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 81 (High) | 0 (Low) | 5 (Low) | 318 (Very high) | 52 (High) | 4 (Low) | 12 (Low) | 58 |
| June | 11 (Low) | 3 (Low) | 43 (Medium) | 10 (Low) | 70 (Medium) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 6 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 7 (Low) | 40 (Medium) | 4 (Low) | 0 (Low) | 12 (Low) | 15 |
| July | 1 (Low) | 1 (Low) | 10 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 15 (Medium) | 9 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 19 |
| August | 12 (Low) | 1 (Low) | 5 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 24 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 7 |
| September | 2 (Low) | 2 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 75 (Medium) | 12 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (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) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 43 (Medium) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 59 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| December | 8 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |