| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 95 (High) | 0 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 22 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 |
| February | 234 (Very high) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 276 (Very high) | 1 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 95 |
| March | 26 (Low) | 320 (Very high) | 26 (Low) | 6 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 190 (Very high) | 2 (Low) | 42 (Medium) | 54 (High) | 3 (Low) | 58 (High) | 8 (Low) | 29 (Medium) | 18 (Medium) | 54 |
| April | 11 (Low) | 81 (Medium) | 23 (Low) | 11 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 259 (Very high) | 1 (Low) | 34 (Medium) | 4 (Low) | 4 (Low) | 121 (Very high) | 5 (Low) | 11 (Low) | 13 (Low) | 67 |
| May | 43 (Medium) | 20 (Low) | 80 (Medium) | 46 (Medium) | 128 (Medium) | 10 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 15 (Medium) | 1 (Low) | 6 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 147 (Very high) | 0 (Low) | 4 (Low) | 74 (High) | 9 (Low) | 1 (Low) | 9 (Low) | 61 |
| June | 17 (Low) | 0 (Low) | 237 (Very high) | 41 (Medium) | 93 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 12 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 5 (Low) | 8 (Low) | 18 (Medium) | 0 (Low) | 8 (Low) | 32 |
| July | 1 (Low) | 0 (Low) | 47 (Medium) | 2 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 12 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 23 |
| August | 1 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 35 |
| September | 2 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 |
| October | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| November | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 |
| December | 97 (High) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 9 |