| 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 | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 49 (Medium) | 0 (Low) | 3 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |
| February | 107 (High) | 0 (Low) | 3 (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) | 36 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| March | 27 (Low) | 88 (Medium) | 15 (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) | 22 (Medium) | 2 (Low) | 15 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 76 |
| April | 3 (Low) | 136 (High) | 10 (Low) | 9 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 15 (Medium) | 4 (Low) | 0 (Low) | 23 (Medium) | 3 (Low) | 1 (Low) | 29 (Medium) | 26 |
| May | 6 (Low) | 7 (Low) | 255 (Very high) | 26 (Medium) | 97 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 3 (Low) | 28 (Medium) | 0 (Low) | 9 (Low) | 296 (Very high) | 36 (Medium) | 0 (Low) | 9 (Low) | 8 |
| June | 10 (Low) | 2 (Low) | 75 (Medium) | 24 (Medium) | 136 (Medium) | 0 (Low) | 17 (Medium) | 0 (Low) | — | 0 (Low) | 12 (Low) | 3 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 48 (Medium) | 0 (Low) | 1 (Low) | 187 (Very high) | 19 (Medium) | 0 (Low) | 9 (Low) | 15 |
| July | 2 (Low) | 0 (Low) | 88 (High) | 12 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 0 (Low) | 20 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 8 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 6 |
| August | 3 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 19 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 |
| September | 1 (Low) | 0 (Low) | 2 (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) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 7 (Low) | 2 (Low) | 2 (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) | 0 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 |
| November | 7 (Low) | 1 (Low) | 2 (Low) | 0 (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) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 138 (High) | 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) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 |