| 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 | 715 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| February | 442 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | — | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 140 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 5 |
| March | 444 (Very high) | 130 (High) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 178 (Very high) | 24 (Medium) | 11 (Low) | 150 (Very high) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 10 (Low) | 29 |
| April | 4 (Low) | 109 (High) | 5 (Low) | 12 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 338 (Very high) | 0 (Low) | 12 (Low) | 11 (Low) | 1 (Low) | 44 (Medium) | 3 (Low) | 2 (Low) | 6 (Low) | 54 |
| May | 4 (Low) | 5 (Low) | 139 (High) | 17 (Low) | 30 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | 3 (Low) | 57 (High) | 11 (Low) | 1 (Low) | 2 (Low) | 51 |
| June | 1 (Low) | 0 (Low) | 70 (Medium) | 42 (Medium) | 78 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | — | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 4 (Low) | 27 (Medium) | 7 (Low) | 0 (Low) | 5 (Low) | 36 |
| July | 1 (Low) | 0 (Low) | 54 (Medium) | 7 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 1 (Low) | 11 (Low) | 9 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 7 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 9 (Low) | 18 |
| August | 3 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 1 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 31 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 7 |
| October | 20 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| November | 8 (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) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 165 (High) | 0 (Low) | 1 (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) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 |