| 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 | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 580 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| February | 600 (Very high) | 0 (Low) | 26 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 63 (High) | 0 (Low) | 46 (Medium) | 0 (Low) | 42 (Medium) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 |
| March | 556 (Very high) | 608 (Very high) | 16 (Low) | 1 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | — | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 7 (Low) | 47 (Medium) | 13 (Low) | 221 (Very high) | 0 (Low) | 52 (High) | 3 (Low) | 4 (Low) | 7 (Low) | 3 |
| April | 24 (Low) | 518 (Very high) | 15 (Low) | 25 (Medium) | 2 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | — | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 31 (Medium) | 1 (Low) | 31 (Medium) | 17 (Medium) | 1 (Low) | 312 (Very high) | 11 (Low) | 0 (Low) | 23 (Medium) | 1 |
| May | 23 (Low) | 20 (Low) | 373 (Very high) | 177 (Very high) | 261 (High) | 4 (Low) | 0 (Low) | 1 (Low) | — | 0 (Low) | 9 (Low) | 7 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 104 (Very high) | 185 (Very high) | 10 (Low) | 553 (Very high) | 80 (High) | 0 (Low) | 22 (Medium) | 4 |
| June | 8 (Low) | 17 (Low) | 165 (Very high) | 30 (Medium) | 377 (High) | 0 (Low) | 0 (Low) | 0 (Low) | — | 0 (Low) | 8 (Low) | 15 (Medium) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 121 (Very high) | 0 (Low) | 5 (Low) | 134 (Very high) | 42 (Medium) | 0 (Low) | 10 (Low) | 5 |
| July | 3 (Low) | 1 (Low) | 102 (High) | 21 (Medium) | 7 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | — | 1 (Low) | 11 (Low) | 12 (Low) | 0 (Low) | 4 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 24 (Medium) | 0 (Low) | 4 (Low) | 20 (Medium) | 18 (Medium) | 0 (Low) | 9 (Low) | 5 |
| August | 1 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | — | 1 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 11 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 |
| September | 1 (Low) | 2 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 3 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 |
| October | 13 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| November | 6 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 |
| December | 610 (Very high) | 0 (Low) | 2 (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) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 |