| 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 | 1,216 (Very high) | 0 (Low) | 15 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 34 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 111 (Very high) | 0 (Low) | 7 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 1 | 2 |
| February | 887 (Very high) | 0 (Low) | 15 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 44 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 193 (Very high) | 0 (Low) | 99 (High) | 2 (Low) | 41 (Medium) | 0 (Low) | 9 (Low) | 1 (Low) | 1 (Low) | 23 (Medium) | 3 | 2 |
| March | 418 (Very high) | 3 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 24 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 23 (Medium) | 9 (Low) | 435 (Very high) | 1 (Low) | 2 (Low) | 3 (Low) | 3 (Low) | 32 (Medium) | 6 | 2 |
| April | 16 (Low) | 2,280 (Very high) | 36 (Medium) | 32 (Medium) | 5 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 2 (Low) | 5 (Low) | 1 (Low) | 8 (Low) | 45 (Medium) | 2 (Low) | 85 (High) | 49 (Medium) | 3 (Low) | 147 (Very high) | 10 (Low) | 76 (High) | 18 (Medium) | 24 | 43 |
| May | 26 (Low) | 102 (High) | 221 (Very high) | 118 (Very high) | 95 (Medium) | 5 (Low) | 1 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 8 (Low) | 1 (Low) | 1 (Low) | 30 (Medium) | 0 (Low) | 280 (Very high) | 1 (Low) | 2 (Low) | 373 (Very high) | 28 (Medium) | 5 (Low) | 6 (Low) | 28 | 9 |
| June | 63 (Medium) | 45 (Medium) | 284 (Very high) | 32 (Medium) | 506 (Very high) | 1 (Low) | 7 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 23 (Medium) | 0 (Low) | 6 (Low) | 6 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 387 (Very high) | 1 (Low) | 5 (Low) | 155 (Very high) | 29 (Medium) | 1 (Low) | 13 (Low) | 48 | 9 |
| July | 42 (Medium) | 19 (Low) | 155 (Very high) | 17 (Low) | 93 (Medium) | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 12 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 100 (Very high) | 0 (Low) | 7 (Low) | 24 (Medium) | 9 (Low) | 0 (Low) | 11 (Low) | 30 | 7 |
| August | 4 (Low) | 13 (Low) | 14 (Low) | 4 (Low) | 10 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 1 (Low) | 14 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 18 | 1 |
| September | 6 (Low) | 14 (Low) | 9 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 23 (Medium) | 6 (Low) | 1 (Low) | 0 (Low) | 5 (Low) | 11 | 1 |
| October | 22 (Low) | 4 (Low) | 3 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 0 (Low) | 2 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 | 1 |
| November | 5 (Low) | 3 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 4 | 2 |
| December | 40 (Medium) | 7 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |