| 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 | 67 (Medium) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 35 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| February | 376 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 46 (Medium) | 0 (Low) | 84 (High) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| March | 283 (Very high) | 240 (High) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 57 (High) | 2 (Low) | 182 (Very high) | 1 (Low) | 14 (Low) | 1 (Low) | 5 (Low) | 3 (Low) | 8 |
| April | 30 (Medium) | 1,151 (Very high) | 39 (Medium) | 31 (Medium) | 16 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 96 (High) | 3 (Low) | 34 (Medium) | 32 (Medium) | 7 (Low) | 1,080 (Very high) | 8 (Low) | 15 (Medium) | 12 (Low) | 8 |
| May | 25 (Low) | 28 (Low) | 107 (High) | 22 (Medium) | 692 (Very high) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 73 (High) | 0 (Low) | 4 (Low) | 991 (Very high) | 15 (Medium) | 3 (Low) | 7 (Low) | 6 |
| June | 17 (Low) | 4 (Low) | 36 (Medium) | 7 (Low) | 194 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 144 (Very high) | 0 (Low) | 4 (Low) | 86 (High) | 6 (Low) | 0 (Low) | 12 (Low) | 4 |
| July | 1 (Low) | 3 (Low) | 16 (Low) | 2 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 15 (Medium) | 6 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 4 (Low) | 72 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 20 (Medium) | 10 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 42 |
| September | 1 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 |
| October | 16 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| November | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 |
| December | 7 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |