| 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 | 250 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| February | 792 (Very high) | 0 (Low) | 20 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 139 (Very high) | 0 (Low) | 712 (Very high) | 0 (Low) | 159 (Very high) | 1 (Low) | 3 (Low) | 4 (Low) | 8 (Low) | 12 (Low) | 28 |
| March | 403 (Very high) | 397 (Very high) | 16 (Low) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 1,583 (Very high) | 10 (Low) | 73 (High) | 188 (Very high) | 2 (Low) | 85 (High) | 6 (Low) | 61 (High) | 12 (Low) | 65 |
| April | 8 (Low) | 8 (Low) | 23 (Low) | 43 (Medium) | 14 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 214 (Very high) | 2 (Low) | 24 (Medium) | 1 (Low) | 1 (Low) | 356 (Very high) | 15 (Medium) | 7 (Low) | 19 (Medium) | 121 |
| May | 16 (Low) | 0 (Low) | 300 (Very high) | 71 (High) | 129 (Medium) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 16 (Medium) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 61 (High) | 0 (Low) | 68 (High) | 0 (Low) | 8 (Low) | 588 (Very high) | 46 (Medium) | 2 (Low) | 16 (Medium) | 170 |
| June | 7 (Low) | 0 (Low) | 213 (Very high) | 54 (High) | 55 (Medium) | 4 (Low) | 361 (Very high) | 0 (Low) | 0 (Low) | 29 (Medium) | 21 (Medium) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 154 (Very high) | 0 (Low) | 11 (Low) | 97 (High) | 25 (Medium) | 0 (Low) | 9 (Low) | 130 |
| July | 3 (Low) | 0 (Low) | 46 (Medium) | 5 (Low) | 10 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 11 (Low) | 10 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 21 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 12 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 7 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 8 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 |
| October | 5 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (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) | 4 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 |
| November | 22 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| December | 165 (High) | 0 (Low) | 1 (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) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 |