| 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 | 95 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |
| February | 771 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 118 (Very high) | 2 (Low) | 83 (High) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 8 (Low) | 8 |
| March | 283 (Very high) | 12,917 (Very high) | 29 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 5 (Low) | 88 (High) | 55 (High) | 588 (Very high) | 242 (Very high) | 2 (Low) | 257 (Very high) | 16 (Medium) | 14 (Low) | 52 (High) | 50 |
| April | 44 (Medium) | 498 (Very high) | 24 (Low) | 21 (Medium) | 9 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 452 (Very high) | 2 (Low) | 70 (High) | 18 (Medium) | 1 (Low) | 310 (Very high) | 12 (Low) | 5 (Low) | 20 (Medium) | 26 |
| May | 75 (Medium) | 5 (Low) | 412 (Very high) | 35 (Medium) | 204 (High) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 194 (Very high) | 0 (Low) | 14 (Low) | 159 (Very high) | 16 (Medium) | 0 (Low) | 26 (Medium) | 45 |
| June | 19 (Low) | 0 (Low) | 260 (Very high) | 36 (Medium) | 309 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 12 (Low) | 0 (Low) | 9 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 201 (Very high) | 0 (Low) | 15 (Medium) | 108 (Very high) | 11 (Low) | 0 (Low) | 18 (Medium) | 32 |
| July | 4 (Low) | 0 (Low) | 29 (Low) | 7 (Low) | 7 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 15 (Medium) | 13 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 13 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 14 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 6 |
| September | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 |
| October | 43 (Medium) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 3 |
| November | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 |
| December | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |