| 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 | 295 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 4 |
| February | 673 (Very high) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 79 (High) | 1 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 16 (Medium) | 0 (Low) | 2 (Low) | 4 |
| March | 164 (High) | 589 (Very high) | 15 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 58 (High) | 24 (Medium) | 18 (Medium) | 261 (Very high) | 1 (Low) | 7 (Low) | 2 (Low) | 2 (Low) | 11 (Low) | 20 |
| April | 11 (Low) | 628 (Very high) | 17 (Low) | 30 (Medium) | 18 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 121 (Very high) | 2 (Low) | 17 (Medium) | 17 (Medium) | 2 (Low) | 236 (Very high) | 20 (Medium) | 8 (Low) | 22 (Medium) | 7 |
| May | 5 (Low) | 10 (Low) | 338 (Very high) | 50 (High) | 304 (High) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 7 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 205 (Very high) | 1 (Low) | 11 (Low) | 289 (Very high) | 54 (High) | 1 (Low) | 21 (Medium) | 12 |
| June | 2 (Low) | 3 (Low) | 85 (High) | 6 (Low) | 172 (Medium) | 1 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 7 (Low) | 25 (Medium) | 5 (Low) | 0 (Low) | 4 (Low) | 6 |
| July | 3 (Low) | 1 (Low) | 17 (Low) | 1 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 13 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 18 |
| August | 1 (Low) | 7 (Low) | 5 (Low) | 2 (Low) | 4 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 12 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 12 |
| September | 1 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| October | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 15 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| December | 84 (Medium) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |