| 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 | 1,193 (Very high) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 74 (High) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 | 2 |
| February | 813 (Very high) | 0 (Low) | 15 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 184 (Very high) | 0 (Low) | 65 (High) | 1 (Low) | 12 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 4 (Low) | 1 | 2 |
| March | 400 (Very high) | 2,271 (Very high) | 23 (Low) | 7 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 28 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 26 (Medium) | 21 (Medium) | 13 (Low) | 38 (Medium) | 157 (Very high) | 1 (Low) | 478 (Very high) | 10 (Low) | 10 (Low) | 14 (Low) | 13 | 13 |
| April | 60 (Medium) | 530 (Very high) | 38 (Medium) | 41 (Medium) | 29 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 3 (Low) | 51 (High) | 1 (Low) | 49 (Medium) | 35 (Medium) | 2 (Low) | 1,968 (Very high) | 12 (Low) | 10 (Low) | 21 (Medium) | 21 | 23 |
| May | 38 (Medium) | 15 (Low) | 150 (High) | 53 (High) | 422 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 11 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 145 (Very high) | 1 (Low) | 9 (Low) | 592 (Very high) | 13 (Low) | 1 (Low) | 8 (Low) | 23 | 21 |
| June | 10 (Low) | 4 (Low) | 59 (Medium) | 10 (Low) | 47 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 7 (Low) | 0 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 7 (Low) | 42 (Medium) | 9 (Low) | 1 (Low) | 9 (Low) | 16 | 11 |
| July | 2 (Low) | 2 (Low) | 18 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 8 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 7 | 6 |
| August | 1 (Low) | 1 (Low) | 10 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 18 (Medium) | 4 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 5 | 10 |
| September | 7 (Low) | 5 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 | 5 |
| October | 14 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 | 4 |
| November | 17 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 | 3 |
| December | 102 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 3 |