| 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 | 601 (Very high) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | 805 (Very high) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 17 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 2 (Low) | 5 (Low) | 2 |
| March | 300 (Very high) | 746 (Very high) | 22 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 8 (Low) | 3 (Low) | 1,001 (Very high) | 0 (Low) | 3 (Low) | 3 (Low) | 3 (Low) | 8 (Low) | 68 |
| April | 10 (Low) | 645 (Very high) | 16 (Low) | 20 (Medium) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 14 (Low) | 14 (Low) | 0 (Low) | 214 (Very high) | 3 (Low) | 7 (Low) | 15 (Medium) | 54 |
| May | 13 (Low) | 25 (Low) | 458 (Very high) | 84 (High) | 364 (High) | 5 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 184 (Very high) | 1 (Low) | 9 (Low) | 753 (Very high) | 44 (Medium) | 1 (Low) | 19 (Medium) | 17 |
| June | 9 (Low) | 1 (Low) | 161 (Very high) | 21 (Medium) | 201 (High) | 0 (Low) | 44 (Medium) | 0 (Low) | — | 1 (Low) | 7 (Low) | 14 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 70 (High) | 0 (Low) | 3 (Low) | 193 (Very high) | 33 (Medium) | 0 (Low) | 12 (Low) | 21 |
| July | 1 (Low) | 0 (Low) | 142 (High) | 15 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | — | 0 (Low) | 13 (Low) | 11 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 5 (Low) | 5 (Low) | 19 (Medium) | 0 (Low) | 7 (Low) | 8 |
| August | 1 (Low) | 1 (Low) | 13 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 6 |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 2 |
| November | 10 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 3 |
| December | 355 (Very high) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |