| 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 | 1,420 (Very high) | 1 (Low) | 25 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | — | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 60 (High) | 0 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 |
| February | 294 (Very high) | 0 (Low) | 26 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 17 (Medium) | — | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 46 (Medium) | 0 (Low) | 91 (High) | 1 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 3 (Low) | 8 (Low) | 4 |
| March | 237 (Very high) | 950 (Very high) | 21 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 11 (Low) | 3 (Low) | 150 (Very high) | 2 (Low) | 5 (Low) | 3 (Low) | 6 (Low) | 25 (Medium) | 28 |
| April | 9 (Low) | 633 (Very high) | 18 (Low) | 34 (Medium) | 2 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 1 (Low) | 1 (Low) | 19 (Medium) | 2 (Low) | 0 (Low) | 2 (Low) | 66 (High) | 0 (Low) | 22 (Medium) | 4 (Low) | 2 (Low) | 171 (Very high) | 10 (Low) | 5 (Low) | 72 (High) | 23 |
| May | 11 (Low) | 21 (Low) | 343 (Very high) | 50 (High) | 203 (High) | 2 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 22 (Medium) | 1 (Low) | 5 (Low) | 210 (Very high) | 41 (Medium) | 1 (Low) | 13 (Low) | 17 |
| June | 5 (Low) | 1 (Low) | 65 (Medium) | 21 (Medium) | 259 (High) | 0 (Low) | 1 (Low) | 0 (Low) | — | 0 (Low) | 16 (Medium) | 7 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 93 (High) | 9 (Low) | 106 (Very high) | 26 (Medium) | 0 (Low) | 9 (Low) | 12 |
| July | 1 (Low) | 0 (Low) | 80 (Medium) | 15 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | — | 1 (Low) | 28 (Medium) | 6 (Low) | 0 (Low) | 1 (Low) | 70 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 5 (Low) | 7 (Low) | 7 (Low) | 0 (Low) | 6 (Low) | 26 |
| August | 0 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 16 |
| September | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 12 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 57 (Medium) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| December | 1,202 (Very high) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |