| 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 | 40 (Medium) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| February | 182 (High) | 1 (Low) | 16 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 70 (High) | 12 (Low) | 115 (Very high) | 1 (Low) | 192 (Very high) | 1 (Low) | 2 (Low) | 1 (Low) | 6 (Low) | 15 (Medium) | 9 |
| March | 101 (High) | 1,426 (Very high) | 8 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 6 (Low) | 103 (Very high) | 3 (Low) | 30 (Medium) | 54 (High) | 1 (Low) | 76 (High) | 3 (Low) | 7 (Low) | 19 (Medium) | 22 |
| April | 3 (Low) | 90 (Medium) | 10 (Low) | 69 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 18 (Medium) | 2 (Low) | 1 (Low) | 366 (Very high) | 14 (Low) | 2 (Low) | 27 (Medium) | 41 |
| May | 8 (Low) | 4 (Low) | 363 (Very high) | 77 (High) | 98 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 17 (Medium) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 49 (Medium) | 0 (Low) | 9 (Low) | 293 (Very high) | 85 (High) | 0 (Low) | 18 (Medium) | 45 |
| June | 8 (Low) | 0 (Low) | 172 (Very high) | 38 (Medium) | 546 (Very high) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 14 (Low) | 0 (Low) | 7 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 44 (Medium) | 0 (Low) | 11 (Low) | 103 (Very high) | 17 (Medium) | 0 (Low) | 14 (Low) | 40 |
| July | 1 (Low) | 15 (Low) | 29 (Low) | 4 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 8 (Low) | 0 (Low) | 10 (Low) | 11 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 11 (Low) | 10 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 12 |
| August | 8 (Low) | 0 (Low) | 7 (Low) | 6 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 11 |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (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) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |
| November | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (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) | 1 (Low) | 0 (Low) | 2 (Low) | 0 |
| December | 12 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 |