| 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 | 101 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 70 (High) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 0 |
| February | 483 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 145 (Very high) | 0 (Low) | 179 (Very high) | 2 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 15 (Medium) | 0 | 0 |
| March | 114 (High) | 2 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 44 (Medium) | 0 (Low) | 18 (Medium) | 2 (Low) | 6 (Low) | 16 (Medium) | 0 | 0 |
| April | 23 (Low) | 1,510 (Very high) | 10 (Low) | 19 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 70 (High) | 1 (Low) | 78 (High) | 28 (Medium) | 3 (Low) | 157 (Very high) | 4 (Low) | 4 (Low) | 72 (High) | 7 | 1 |
| May | 8 (Low) | 60 (Medium) | 79 (Medium) | 81 (High) | 98 (Medium) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 6 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 62 (High) | 0 (Low) | 1 (Low) | 780 (Very high) | 42 (Medium) | 1 (Low) | 20 (Medium) | 4 | 0 |
| June | 10 (Low) | 2 (Low) | 110 (High) | 57 (High) | 615 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 8 (Low) | 7 (Low) | 7 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 260 (Very high) | 0 (Low) | 9 (Low) | 147 (Very high) | 18 (Medium) | 2 (Low) | 14 (Low) | 8 | 0 |
| July | 2 (Low) | 3 (Low) | 61 (Medium) | 8 (Low) | 33 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 47 (Medium) | 0 (Low) | 7 (Low) | 54 (High) | 3 (Low) | 0 (Low) | 9 (Low) | 4 | 0 |
| August | 2 (Low) | 2 (Low) | 7 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 13 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 0 |
| September | 2 (Low) | 2 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 0 |
| October | 48 (Medium) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (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) | 7 (Low) | 0 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 | 0 |
| November | 62 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| December | 23 (Low) | 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) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 | 0 |