| 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 | 101 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (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) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 38 (Medium) | 2 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| March | 92 (High) | 5 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 25 (Medium) | 1 (Low) | 2 (Low) | 2 (Low) | 3 (Low) | 3 (Low) | 6 |
| April | 11 (Low) | 233 (High) | 14 (Low) | 15 (Low) | 4 (Low) | 41 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 68 (High) | 0 (Low) | 70 (High) | 0 (Low) | 0 (Low) | 472 (Very high) | 20 (Medium) | 0 (Low) | 22 (Medium) | 23 |
| May | 55 (Medium) | 1 (Low) | 287 (Very high) | 60 (High) | 129 (Medium) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 367 (Very high) | 243 (Very high) | 7 (Low) | 1,111 (Very high) | 54 (High) | 0 (Low) | 67 (High) | 25 |
| June | 59 (Medium) | 2 (Low) | 381 (Very high) | 74 (High) | 213 (High) | 20 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1,104 (Very high) | 0 (Low) | 3 (Low) | 156 (Very high) | 74 (High) | 0 (Low) | 27 (Medium) | 30 |
| July | 3 (Low) | 1 (Low) | 54 (Medium) | 5 (Low) | 3 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 3 (Low) | 14 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 21 |
| August | 7 (Low) | 2 (Low) | 6 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 15 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 17 (Medium) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 8 |
| October | 18 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 2 |
| November | 58 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 17 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 2 |
| December | 359 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |