| 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 | 1,433 (Very high) | 1 (Low) | 23 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 61 (High) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 74 (High) | 0 (Low) | 28 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 3 |
| February | 626 (Very high) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 161 (Very high) | 1 (Low) | 37 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 8 (Low) | 3 (Low) | 2 |
| March | 75 (Medium) | 133 (High) | 18 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 85 (High) | 1 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 7 (Low) | 30 |
| April | 3 (Low) | 986 (Very high) | 25 (Low) | 39 (Medium) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 1 (Low) | 10 (Low) | 10 (Low) | 4 (Low) | 193 (Very high) | 16 (Medium) | 5 (Low) | 15 (Medium) | 35 |
| May | 19 (Low) | 12 (Low) | 211 (Very high) | 42 (Medium) | 44 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 4 (Low) | 188 (Very high) | 16 (Medium) | 1 (Low) | 13 (Low) | 18 |
| June | 26 (Low) | 2 (Low) | 158 (Very high) | 47 (Medium) | 164 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 15 (Medium) | 24 (Medium) | 0 (Low) | 4 (Low) | 49 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 65 (High) | 0 (Low) | 9 (Low) | 242 (Very high) | 18 (Medium) | 0 (Low) | 21 (Medium) | 28 |
| July | 3 (Low) | 2 (Low) | 65 (Medium) | 4 (Low) | 7 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 42 (Medium) | 6 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 5 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 18 |
| August | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 12 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 31 |
| September | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (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) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| November | 3 (Low) | 0 (Low) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |