| 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 | 893 (Very high) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 880 (Very high) | 1 (Low) | 13 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 92 (High) | 0 (Low) | 106 (Very high) | 2 (Low) | 31 (Medium) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 |
| March | 288 (Very high) | 1,285 (Very high) | 19 (Low) | 1 (Low) | 4 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 16 (Medium) | 3 (Low) | 25 (Medium) | 144 (Very high) | 1 (Low) | 12 (Low) | 3 (Low) | 0 (Low) | 10 (Low) | 16 |
| April | 23 (Low) | 528 (Very high) | 33 (Medium) | 55 (High) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 44 (Medium) | 0 (Low) | 42 (Medium) | 3 (Low) | 2 (Low) | 1,196 (Very high) | 19 (Medium) | 2 (Low) | 5 (Low) | 121 |
| May | 23 (Low) | 0 (Low) | 334 (Very high) | 51 (High) | 193 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 171 (Very high) | 0 (Low) | 8 (Low) | 1,152 (Very high) | 30 (Medium) | 0 (Low) | 16 (Medium) | 153 |
| June | 15 (Low) | 0 (Low) | 167 (Very high) | 18 (Low) | 286 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 21 (Medium) | 0 (Low) | 2 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 74 (High) | 0 (Low) | 14 (Low) | 101 (Very high) | 22 (Medium) | 0 (Low) | 8 (Low) | 53 |
| July | 2 (Low) | 0 (Low) | 45 (Medium) | 4 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 39 (Medium) | 5 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 9 (Low) | 18 (Medium) | 9 (Low) | 0 (Low) | 9 (Low) | 12 |
| August | 0 (Low) | 0 (Low) | 10 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 9 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 8 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 6 |
| September | 5 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 23 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 56 (Medium) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 |
| November | 221 (Very high) | 2 (Low) | 5 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 1 |
| December | 396 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (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) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |