| 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 | 1,205 (Very high) | 0 (Low) | 21 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 62 (High) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | 508 (Very high) | 6 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 86 (High) | 2 (Low) | 22 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 3 |
| March | 128 (High) | 63 (Medium) | 11 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 16 (Medium) | 195 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 6 (Low) | 4 |
| April | 6 (Low) | 354 (Very high) | 13 (Low) | 52 (High) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 141 (Very high) | 0 (Low) | 19 (Medium) | 6 (Low) | 3 (Low) | 247 (Very high) | 18 (Medium) | 0 (Low) | 6 (Low) | 39 |
| May | 38 (Medium) | 2 (Low) | 244 (Very high) | 49 (Medium) | 75 (Medium) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 14 (Low) | 56 (High) | 4 (Low) | 248 (Very high) | 28 (Medium) | 0 (Low) | 16 (Medium) | 45 |
| June | 49 (Medium) | 0 (Low) | 154 (Very high) | 49 (Medium) | 163 (Medium) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 15 (Medium) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 87 (High) | 0 (Low) | 12 (Low) | 250 (Very high) | 21 (Medium) | 0 (Low) | 17 (Medium) | 33 |
| July | 1 (Low) | 0 (Low) | 53 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 6 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 5 (Low) | 5 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 6 |
| August | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 |
| September | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| October | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| November | 1 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 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) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |