| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 478 (Very high) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 41 (Medium) | 1 (Low) | 29 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 |
| February | 241 (Very high) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 144 (Very high) | 1 (Low) | 147 (Very high) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 3 |
| March | 137 (High) | 1,031 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 14 (Low) | 5 (Low) | 30 (Medium) | 70 (High) | 0 (Low) | 32 (Medium) | 1 (Low) | 0 (Low) | 10 (Low) | 3 |
| April | 7 (Low) | 786 (Very high) | 2 (Low) | 22 (Medium) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 98 (High) | 0 (Low) | 6 (Low) | 14 (Low) | 3 (Low) | 177 (Very high) | 6 (Low) | 3 (Low) | 29 (Medium) | 195 |
| May | 1 (Low) | 2 (Low) | 37 (Medium) | 11 (Low) | 42 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 2 (Low) | 81 (High) | 8 (Low) | 1 (Low) | 9 (Low) | 73 |
| June | 2 (Low) | 0 (Low) | 30 (Medium) | 11 (Low) | 27 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 36 (Medium) | 14 (Low) | 0 (Low) | 7 (Low) | 17 |
| July | 2 (Low) | 1 (Low) | 47 (Medium) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 7 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 6 |
| August | 1 (Low) | 1 (Low) | 8 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 5 |
| September | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (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) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 2 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| November | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (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) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |