| 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 | 271 (Very high) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 259 (Very high) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 216 (Very high) | 0 (Low) | 12 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 3 |
| March | 202 (Very high) | 576 (Very high) | 10 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 89 (High) | 92 (High) | 273 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 2 (Low) | 10 (Low) | 22 |
| April | 9 (Low) | 1,393 (Very high) | 9 (Low) | 4 (Low) | 0 (Low) | 36 (Medium) | 0 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 56 (High) | 4 (Low) | 364 (Very high) | 13 (Low) | 1 (Low) | 8 (Low) | 2 (Low) | 3 (Low) | 7 (Low) | 17 |
| May | 9 (Low) | 4 (Low) | 423 (Very high) | 88 (High) | 315 (High) | 4 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 8 (Low) | 1 (Low) | 84 (High) | 0 (Low) | 15 (Medium) | 796 (Very high) | 33 (Medium) | 3 (Low) | 20 (Medium) | 57 |
| June | 1 (Low) | 0 (Low) | 24 (Low) | 9 (Low) | 112 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 12 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 29 (Medium) | 4 (Low) | 0 (Low) | 3 (Low) | 4 |
| July | 1 (Low) | 0 (Low) | 68 (Medium) | 8 (Low) | 4 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | — | 2 (Low) | 11 (Low) | 10 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 16 (Medium) | 21 (Medium) | 3 (Low) | 0 (Low) | 8 (Low) | 8 |
| August | 2 (Low) | 0 (Low) | 9 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 2 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 13 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 9 |
| September | 1 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| October | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 102 (High) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |