| 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 | 115 (High) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 |
| February | 385 (Very high) | 0 (Low) | 21 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 115 (Very high) | 0 (Low) | 131 (Very high) | 2 (Low) | 242 (Very high) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 10 (Low) | 10 |
| March | 217 (Very high) | 1,375 (Very high) | 24 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 19 (Medium) | 118 (Very high) | 12 (Low) | 20 (Medium) | 289 (Very high) | 0 (Low) | 42 (Medium) | 1 (Low) | 7 (Low) | 22 (Medium) | 24 |
| April | 4 (Low) | 71 (Medium) | 6 (Low) | 74 (High) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 10 (Low) | 1 (Low) | 14 (Low) | 1 (Low) | 2 (Low) | 385 (Very high) | 7 (Low) | 10 (Low) | 18 (Medium) | 4 |
| May | 5 (Low) | 0 (Low) | 287 (Very high) | 75 (High) | 65 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 103 (Very high) | 0 (Low) | 4 (Low) | 381 (Very high) | 85 (High) | 0 (Low) | 20 (Medium) | 17 |
| June | 13 (Low) | 0 (Low) | 312 (Very high) | 56 (High) | 308 (High) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 14 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 97 (High) | 0 (Low) | 5 (Low) | 177 (Very high) | 25 (Medium) | 0 (Low) | 8 (Low) | 16 |
| July | 2 (Low) | 0 (Low) | 34 (Medium) | 7 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 7 |
| August | 2 (Low) | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 11 |
| September | 1 (Low) | 1 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 17 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 |
| October | 2 (Low) | 8 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 |
| November | 5 (Low) | 0 (Low) | 1 (Low) | 1 (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) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 |
| December | 40 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |