| 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 | 2,520 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 97 (High) | 0 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 0 |
| February | 1,100 (Very high) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 161 (Very high) | 0 (Low) | 202 (Very high) | 3 (Low) | 69 (High) | 0 (Low) | 3 (Low) | 9 (Low) | 1 (Low) | 15 (Medium) | 0 | 0 |
| March | 22 (Low) | 2,382 (Very high) | 25 (Low) | 4 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 11 (Low) | 119 (Very high) | 2 (Low) | 44 (Medium) | 53 (High) | 0 (Low) | 72 (High) | 22 (Medium) | 4 (Low) | 24 (Medium) | 0 | 0 |
| April | 8 (Low) | 862 (Very high) | 35 (Medium) | 101 (Very high) | 17 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 7 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 51 (High) | 2 (Low) | 70 (High) | 15 (Medium) | 4 (Low) | 520 (Very high) | 26 (Medium) | 4 (Low) | 20 (Medium) | 2 | 0 |
| May | 13 (Low) | 18 (Low) | 177 (Very high) | 137 (Very high) | 286 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 42 (Medium) | 13 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 678 (Very high) | 0 (Low) | 9 (Low) | 466 (Very high) | 33 (Medium) | 0 (Low) | 13 (Low) | 7 | 0 |
| June | 4 (Low) | 3 (Low) | 100 (High) | 15 (Low) | 143 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 9 (Low) | 0 (Low) | 17 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 97 (High) | 1 (Low) | 4 (Low) | 97 (High) | 15 (Medium) | 0 (Low) | 3 (Low) | 5 | 2 |
| July | 1 (Low) | 0 (Low) | 55 (Medium) | 10 (Low) | 12 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 10 (Low) | 31 (Medium) | 1 (Low) | 0 (Low) | 3 (Low) | 10 | 1 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| September | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 | 0 |
| October | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |
| November | 174 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 | 0 |
| December | 550 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 0 |