| 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 | 96 (High) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 |
| February | 328 (Very high) | 24 (Low) | 24 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 66 (High) | 2 (Low) | 191 (Very high) | 1 (Low) | 113 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 16 (Medium) | 5 |
| March | 154 (High) | 1,000 (Very high) | 20 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 68 (High) | 5 (Low) | 15 (Medium) | 68 (High) | 1 (Low) | 12 (Low) | 3 (Low) | 10 (Low) | 25 (Medium) | 25 |
| April | 7 (Low) | 24 (Low) | 11 (Low) | 72 (High) | 15 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 25 (Medium) | 1 (Low) | 2 (Low) | 364 (Very high) | 21 (Medium) | 1 (Low) | 36 (Medium) | 94 |
| May | 10 (Low) | 0 (Low) | 319 (Very high) | 90 (High) | 117 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 12 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 100 (Very high) | 0 (Low) | 5 (Low) | 279 (Very high) | 55 (High) | 0 (Low) | 20 (Medium) | 75 |
| June | 6 (Low) | 0 (Low) | 295 (Very high) | 48 (Medium) | 817 (Very high) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 15 (Medium) | 29 (Medium) | 0 (Low) | 7 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 86 (High) | 0 (Low) | 12 (Low) | 107 (Very high) | 19 (Medium) | 0 (Low) | 15 (Medium) | 43 |
| July | 2 (Low) | 0 (Low) | 52 (Medium) | 8 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 23 (Medium) | 0 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 15 (Medium) | 28 (Medium) | 3 (Low) | 0 (Low) | 5 (Low) | 11 |
| August | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 18 (Medium) | 5 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 5 |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 |
| October | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 31 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (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) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |