| 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 | 617 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |
| February | 451 (Very high) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 31 (Medium) | 0 (Low) | 140 (Very high) | 21 (Medium) | 175 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 4 |
| March | 661 (Very high) | 0 (Low) | 15 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 68 (High) | 828 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 7 |
| April | 14 (Low) | 92 (Medium) | 26 (Low) | 47 (Medium) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 61 (High) | 4 (Low) | 0 (Low) | 224 (Very high) | 14 (Low) | 15 (Medium) | 37 (Medium) | 23 |
| May | 68 (Medium) | 4 (Low) | 328 (Very high) | 79 (High) | 39 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 453 (Very high) | 0 (Low) | 8 (Low) | 324 (Very high) | 42 (Medium) | 5 (Low) | 17 (Medium) | 26 |
| June | 100 (High) | 0 (Low) | 353 (Very high) | 48 (Medium) | 716 (Very high) | 0 (Low) | 38 (Medium) | 0 (Low) | 0 (Low) | 11 (Low) | 14 (Low) | 0 (Low) | 11 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 246 (Very high) | 0 (Low) | 9 (Low) | 280 (Very high) | 30 (Medium) | 9 (Low) | 23 (Medium) | 37 |
| July | 10 (Low) | 1 (Low) | 35 (Medium) | 8 (Low) | 4 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 13 |
| August | 4 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 |
| September | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| October | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 2 (Low) | 0 (Low) | 1 (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) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 4 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 |