| 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 | 1,047 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 68 (High) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 |
| February | 416 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 40 (Medium) | 0 (Low) | 275 (Very high) | 1 (Low) | 68 (High) | 1 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 7 (Low) | 4 |
| March | 662 (Very high) | 4,121 (Very high) | 8 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 7 (Low) | 1 (Low) | 19 (Medium) | 46 (Medium) | 35 (Medium) | 73 (High) | 541 (Very high) | 1 (Low) | 14 (Low) | 7 (Low) | 6 (Low) | 29 (Medium) | 176 |
| April | 11 (Low) | 7,929 (Very high) | 26 (Low) | 27 (Medium) | 5 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 26 (Medium) | 0 (Low) | 1 (Low) | 173 (Very high) | 2 (Low) | 285 (Very high) | 15 (Medium) | 1 (Low) | 316 (Very high) | 6 (Low) | 33 (Medium) | 28 (Medium) | 56 |
| May | 5 (Low) | 54 (Medium) | 239 (Very high) | 34 (Medium) | 61 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 0 (Low) | 44 (Medium) | 0 (Low) | 6 (Low) | 800 (Very high) | 13 (Low) | 2 (Low) | 22 (Medium) | 42 |
| June | 1 (Low) | 0 (Low) | 87 (High) | 23 (Medium) | 138 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 8 (Low) | 100 (Very high) | 12 (Low) | 0 (Low) | 25 (Medium) | 24 |
| July | 2 (Low) | 0 (Low) | 12 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 4 |
| August | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 |
| September | 4 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 15 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| November | 243 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 |
| December | 209 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 3 |