| 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 | 572 (Very high) | 0 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 0 (Low) | 16 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 4 |
| February | 994 (Very high) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 66 (High) | 0 (Low) | 137 (Very high) | 2 (Low) | 20 (Medium) | 0 (Low) | 2 (Low) | 14 (Low) | 0 (Low) | 2 (Low) | 2 |
| March | 1,283 (Very high) | 130 (High) | 28 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 25 (Medium) | 6 (Low) | 287 (Very high) | 1 (Low) | 36 (Medium) | 5 (Low) | 67 (High) | 5 (Low) | 47 |
| April | 17 (Low) | 1,487 (Very high) | 21 (Low) | 27 (Medium) | 8 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 45 (Medium) | 1 (Low) | 50 (High) | 22 (Medium) | 0 (Low) | 265 (Very high) | 3 (Low) | 3 (Low) | 8 (Low) | 22 |
| May | 24 (Low) | 14 (Low) | 218 (Very high) | 62 (High) | 1,148 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 13 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 110 (Very high) | 0 (Low) | 8 (Low) | 419 (Very high) | 12 (Low) | 0 (Low) | 5 (Low) | 21 |
| June | 120 (High) | 0 (Low) | 132 (High) | 28 (Medium) | 159 (Medium) | 0 (Low) | 32 (Medium) | 0 (Low) | 0 (Low) | 25 (Medium) | 3 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 81 (High) | 0 (Low) | 4 (Low) | 157 (Very high) | 31 (Medium) | 0 (Low) | 9 (Low) | 21 |
| July | 4 (Low) | 0 (Low) | 12 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 9 |
| August | 4 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 7 |
| September | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 7 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 5 |
| October | 29 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| November | 7 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 |
| December | 47 (Medium) | 0 (Low) | 2 (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) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |