| 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 | 136 (High) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 |
| February | 501 (Very high) | 0 (Low) | 15 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 25 (Medium) | — | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 1 (Low) | 129 (Very high) | 0 (Low) | 36 (Medium) | 1 (Low) | 4 (Low) | 2 (Low) | 3 (Low) | 15 (Medium) | 5 |
| March | 570 (Very high) | 655 (Very high) | 10 (Low) | 6 (Low) | 4 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 2 (Low) | 14 (Low) | 43 (Medium) | 12 (Low) | 218 (Very high) | 2 (Low) | 12 (Low) | 4 (Low) | 4 (Low) | 46 (Medium) | 31 |
| April | 7 (Low) | 314 (Very high) | 8 (Low) | 11 (Low) | 3 (Low) | 14 (Low) | 1 (Low) | 1 (Low) | — | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 153 (Very high) | 1 (Low) | 19 (Medium) | 14 (Low) | 1 (Low) | 63 (High) | 5 (Low) | 3 (Low) | 7 (Low) | 15 |
| May | 3 (Low) | 19 (Low) | 190 (Very high) | 31 (Medium) | 196 (Medium) | 2 (Low) | 1 (Low) | 0 (Low) | — | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 50 (High) | 1 (Low) | 6 (Low) | 0 (Low) | 8 (Low) | 118 (Very high) | 12 (Low) | 3 (Low) | 3 (Low) | 18 |
| June | 9 (Low) | 0 (Low) | 65 (Medium) | 11 (Low) | 548 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | — | 0 (Low) | 5 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 10 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 6 (Low) | 161 (Very high) | 16 (Medium) | 0 (Low) | 5 (Low) | 22 |
| July | 2 (Low) | 0 (Low) | 36 (Medium) | 7 (Low) | 15 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 0 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 16 (Medium) | 5 (Low) | 6 (Low) | 0 (Low) | 5 (Low) | 14 |
| August | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 34 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 7 |
| September | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 10 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 31 (Medium) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 |
| October | 46 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 4 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 13 |
| November | 40 (Medium) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 32 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| December | 292 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 5 |