| 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 | 276 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 |
| February | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| March | 172 (High) | 1,098 (Very high) | 39 (Medium) | 4 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 32 (Medium) | 5 (Low) | 8 (Low) | 12 (Low) | 85 (High) | 0 (Low) | 28 (Medium) | 1 (Low) | 24 (Medium) | 25 (Medium) | 47 |
| April | 41 (Medium) | 1,611 (Very high) | 32 (Medium) | 33 (Medium) | 43 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 8 (Low) | 5 (Low) | 1 (Low) | 18 (Medium) | 120 (Very high) | 1 (Low) | 33 (Medium) | 66 (High) | 2 (Low) | 878 (Very high) | 7 (Low) | 25 (Medium) | 48 (Medium) | 104 |
| May | 36 (Medium) | 5 (Low) | 181 (Very high) | 101 (Very high) | 2,124 (Very high) | 5 (Low) | 85 (High) | 1 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 1 (Low) | 11 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 158 (Very high) | 1 (Low) | 6 (Low) | 1,285 (Very high) | 44 (Medium) | 5 (Low) | 20 (Medium) | 253 |
| June | 186 (High) | 0 (Low) | 123 (High) | 53 (High) | 166 (Medium) | 1 (Low) | 110 (Very high) | 0 (Low) | 0 (Low) | 18 (Medium) | 5 (Low) | 0 (Low) | 5 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 70 (High) | 0 (Low) | 14 (Low) | 51 (High) | 18 (Medium) | 0 (Low) | 14 (Low) | 87 |
| July | 4 (Low) | 0 (Low) | 34 (Medium) | 5 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 21 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 187 |
| August | 1 (Low) | 1 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 17 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 44 |
| September | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 |
| October | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |