| 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 | 1,928 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 4 (Low) | 10 (Low) | 0 (Low) | 14 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 |
| February | 1,956 (Very high) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 39 (Medium) | 0 (Low) | 236 (Very high) | 3 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 15 |
| March | 149 (High) | 67 (Medium) | 19 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 16 (Medium) | 15 (Medium) | 196 (Very high) | 0 (Low) | 15 (Medium) | 0 (Low) | 11 (Low) | 4 (Low) | 21 |
| April | 4 (Low) | 660 (Very high) | 17 (Low) | 30 (Medium) | 17 (Low) | 39 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 9 (Low) | 0 (Low) | 56 (High) | 132 (Very high) | 0 (Low) | 294 (Very high) | 7 (Low) | 30 (Medium) | 12 (Low) | 24 |
| May | 54 (Medium) | 0 (Low) | 158 (Very high) | 45 (Medium) | 1,124 (Very high) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 219 (Very high) | 0 (Low) | 10 (Low) | 642 (Very high) | 20 (Medium) | 11 (Low) | 10 (Low) | 54 |
| June | 118 (High) | 0 (Low) | 74 (Medium) | 22 (Medium) | 226 (High) | 0 (Low) | 69 (High) | 0 (Low) | 0 (Low) | 10 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 50 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 69 (High) | 0 (Low) | 8 (Low) | 40 (Medium) | 22 (Medium) | 1 (Low) | 20 (Medium) | 71 |
| July | 4 (Low) | 0 (Low) | 27 (Low) | 6 (Low) | 1 (Low) | 2 (Low) | 212 (Very high) | 0 (Low) | 0 (Low) | 25 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 19 (Medium) | 5 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 18 |
| August | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| September | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 |
| October | 18 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 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) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 |
| November | 6 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 11 |
| December | 17 (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) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 4 |