| 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 | 145 (High) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 283 (Very high) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 0 |
| February | 536 (Very high) | 3 (Low) | 13 (Low) | 9 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 39 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 95 (High) | 0 (Low) | 19 (Medium) | 3 (Low) | 27 (Medium) | 0 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 11 (Low) | 1 | 0 |
| March | 36 (Medium) | 1,240 (Very high) | 7 (Low) | 8 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 45 (Medium) | 5 (Low) | 24 (Medium) | 22 (Medium) | 4 (Low) | 54 (High) | 4 (Low) | 0 (Low) | 10 (Low) | 0 | 0 |
| April | 3 (Low) | 62 (Medium) | 10 (Low) | 46 (Medium) | 10 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 17 (Medium) | 2 (Low) | 5 (Low) | 91 (High) | 11 (Low) | 0 (Low) | 6 (Low) | 11 | 0 |
| May | 10 (Low) | 0 (Low) | 343 (Very high) | 123 (Very high) | 812 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 1 (Low) | 16 (Medium) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 792 (Very high) | 0 (Low) | 7 (Low) | 389 (Very high) | 70 (High) | 0 (Low) | 10 (Low) | 19 | 0 |
| June | 3 (Low) | 2 (Low) | 125 (High) | 10 (Low) | 21 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 11 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 70 (High) | 1 (Low) | 4 (Low) | 26 (Medium) | 17 (Medium) | 0 (Low) | 10 (Low) | 3 | 0 |
| July | 2 (Low) | 2 (Low) | 48 (Medium) | 2 (Low) | 8 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 15 (Medium) | 2 (Low) | 0 (Low) | 4 (Low) | 2 | 2 |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 0 |
| September | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (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) | 15 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| October | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 0 |
| November | 127 (High) | 1 (Low) | 1 (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) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 0 |
| December | 238 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 0 |