| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 712 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 11 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |
| February | 370 (Very high) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 61 (High) | 0 (Low) | 178 (Very high) | 2 (Low) | 155 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 |
| March | 81 (Medium) | 1,220 (Very high) | 9 (Low) | 12 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 8 (Low) | 1 (Low) | 8 (Low) | 17 (Medium) | 4 (Low) | 57 (High) | 44 (Medium) | 1 (Low) | 39 (Medium) | 3 (Low) | 16 (Medium) | 9 (Low) | 10 |
| April | 11 (Low) | 1,453 (Very high) | 11 (Low) | 28 (Medium) | 9 (Low) | 14 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 528 (Very high) | 3 (Low) | 62 (High) | 54 (High) | 3 (Low) | 293 (Very high) | 10 (Low) | 12 (Low) | 28 (Medium) | 65 |
| May | 17 (Low) | 1 (Low) | 201 (Very high) | 56 (High) | 926 (Very high) | 2 (Low) | 21 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 58 (High) | 0 (Low) | 9 (Low) | 256 (Very high) | 25 (Medium) | 3 (Low) | 10 (Low) | 138 |
| June | 76 (Medium) | 0 (Low) | 71 (Medium) | 26 (Medium) | 163 (Medium) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 7 (Low) | 0 (Low) | 5 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 38 (Medium) | 0 (Low) | 12 (Low) | 37 (Medium) | 18 (Medium) | 0 (Low) | 14 (Low) | 18 |
| July | 2 (Low) | 0 (Low) | 19 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 22 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 25 |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 26 |
| September | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| October | 46 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 4 |
| November | 24 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 |
| December | 32 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 |