| Month | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 490 (Very high) | 0 (Low) | 94 (High) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 2 |
| February | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 246 (Very high) | 0 (Low) | 118 (Very high) | 2 (Low) | 18 (Medium) | 1 (Low) | 1 (Low) | 3 (Low) | 23 (Medium) | 2 | 2 |
| March | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 18 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 14 (Low) | 10 (Low) | 4 (Low) | 22 (Medium) | 64 (High) | 9 (Low) | 1 (Low) | 4 (Low) | 28 (Medium) | 8 | 7 |
| April | 56 (High) | 1 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 25 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 3 (Low) | 1 (Low) | 1 (Low) | 48 (Medium) | 1 (Low) | 71 (High) | 57 (High) | 450 (Very high) | 10 (Low) | 6 (Low) | 39 (Medium) | 31 | 25 |
| May | 247 (Very high) | 284 (High) | 23 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 11 (Low) | 1 (Low) | 1 (Low) | 19 (Medium) | 0 (Low) | 332 (Very high) | 0 (Low) | 4,594 (Very high) | 61 (High) | 3 (Low) | 34 (Medium) | 65 | 14 |
| June | 22 (Medium) | 86 (Medium) | 0 (Low) | 11 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 95 (High) | 0 (Low) | 232 (Very high) | 16 (Medium) | 0 (Low) | 14 (Low) | 41 | 24 |
| July | 5 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 26 (Medium) | 2 (Low) | 0 (Low) | 9 (Low) | 8 | 13 |
| August | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 27 (Medium) | 1 (Low) | 0 (Low) | 3 (Low) | 8 | 13 |
| September | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 7 |
| October | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 4 | 4 |
| November | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 2 | 9 |
| December | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 3 | 7 |