| 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 | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| February | 1,408 (Very high) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 33 (Medium) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 104 (Very high) | 0 (Low) | 285 (Very high) | 1 (Low) | 242 (Very high) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 66 (High) | 3 | 5 |
| March | 440 (Very high) | 792 (Very high) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 23 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 379 (Very high) | 12 (Low) | 18 (Medium) | 398 (Very high) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 194 (Very high) | 12 | 1 |
| April | 20 (Low) | 2,024 (Very high) | 15 (Low) | 16 (Low) | 20 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 35 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 3,312 (Very high) | 1 (Low) | 114 (Very high) | 126 (Very high) | 10 (Low) | 442 (Very high) | 12 (Low) | 4 (Low) | 346 (Very high) | 28 | 38 |
| May | 86 (Medium) | 18 (Low) | 424 (Very high) | 126 (Very high) | 375 (High) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 63 (High) | 0 (Low) | 220 (Very high) | 0 (Low) | 8 (Low) | 669 (Very high) | 43 (Medium) | 2 (Low) | 326 (Very high) | 47 | 33 |
| June | 16 (Low) | 4 (Low) | 382 (Very high) | 25 (Medium) | 1,024 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 18 (Medium) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 247 (Very high) | 0 (Low) | 12 (Low) | 194 (Very high) | 17 (Medium) | 0 (Low) | 251 (Very high) | 26 | 32 |
| July | 3 (Low) | 4 (Low) | 15 (Low) | 4 (Low) | 3 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 11 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 68 (High) | 8 | 8 |
| August | 1 (Low) | 1 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 70 (High) | 10 | 13 |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 0 (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) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 | 4 |
| October | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| November | 12 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 87 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 | 2 |
| December | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 | 1 |