| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 33 (Medium) | 3 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 | 9 |
| February | 149 (High) | 2 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 21 (Medium) | 0 (Low) | 780 (Very high) | 3 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 3 | 3 |
| March | 587 (Very high) | 6,231 (Very high) | 11 (Low) | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 19 (Medium) | 46 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 13 (Low) | 22 (Medium) | 547 (Very high) | 792 (Very high) | 691 (Very high) | 0 (Low) | 20 (Medium) | 1 (Low) | 4 (Low) | 6 (Low) | 7 | 4 |
| April | 27 (Low) | 1,528 (Very high) | 24 (Low) | 18 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 3 (Low) | 562 (Very high) | 15 (Medium) | 1,760 (Very high) | 66 (High) | 1 (Low) | 302 (Very high) | 4 (Low) | 7 (Low) | 23 (Medium) | 7 | 3 |
| May | 22 (Low) | 15 (Low) | 220 (Very high) | 78 (High) | 210 (High) | 5 (Low) | 22 (Medium) | 0 (Low) | 18 (Medium) | 0 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 47 (Medium) | 2 (Low) | 0 (Low) | 44 (Medium) | 1 (Low) | 397 (Very high) | 0 (Low) | 12 (Low) | 766 (Very high) | 16 (Medium) | 4 (Low) | 9 (Low) | 43 | 10 |
| June | 15 (Low) | 3 (Low) | 74 (Medium) | 20 (Medium) | 193 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 14 (Low) | 9 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 140 (Very high) | 0 (Low) | 14 (Low) | 310 (Very high) | 9 (Low) | 2 (Low) | 11 (Low) | 20 | 6 |
| July | 2 (Low) | 1 (Low) | 18 (Low) | 5 (Low) | 11 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 17 (Medium) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 18 (Medium) | 0 (Low) | 8 (Low) | 37 (Medium) | 1 (Low) | 0 (Low) | 6 (Low) | 6 | 4 |
| August | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 12 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 22 (Medium) | 11 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 | 3 |
| September | 2 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 32 (Medium) | 19 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 3 | 1 |
| October | 11 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| November | 70 (Medium) | 2 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 1 |
| December | 130 (High) | 0 (Low) | 9 (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) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 2 |