| 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 | 215 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 32 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| February | 200 (Very high) | 0 (Low) | 19 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 54 (High) | 0 (Low) | 91 (High) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 |
| March | 414 (Very high) | 381 (Very high) | 17 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 21 (Medium) | 13 (Low) | 34 (Medium) | 2 (Low) | 96 (High) | 1 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 24 (Medium) | 12 |
| April | 9 (Low) | 798 (Very high) | 19 (Low) | 59 (High) | 4 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 116 (Very high) | 1 (Low) | 20 (Medium) | 14 (Low) | 1 (Low) | 143 (Very high) | 12 (Low) | 0 (Low) | 23 (Medium) | 91 |
| May | 16 (Low) | 0 (Low) | 289 (Very high) | 75 (High) | 395 (High) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 29 (Medium) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 59 (High) | 0 (Low) | 5 (Low) | 260 (Very high) | 40 (Medium) | 0 (Low) | 11 (Low) | 103 |
| June | 6 (Low) | 0 (Low) | 38 (Medium) | 11 (Low) | 40 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 0 (Low) | 3 (Low) | 27 (Medium) | 3 (Low) | 0 (Low) | 4 (Low) | 23 |
| July | 1 (Low) | 2 (Low) | 9 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 13 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 8 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 |
| September | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 96 (High) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 61 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 11 (Low) | 0 (Low) | 3 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |