| Month | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 27 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 | 1 |
| February | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 51 (High) | 0 (Low) | 255 (Very high) | 1 (Low) | 76 (High) | 2 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 3 | 2 |
| March | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 8 (Low) | 76 (High) | 4 (Low) | 12 (Low) | 32 (Medium) | 2 (Low) | 4 (Low) | 5 (Low) | 19 (Medium) | 5 | 6 |
| April | 69 (High) | 9 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 17 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 115 (Very high) | 2 (Low) | 21 (Medium) | 5 (Low) | 212 (Very high) | 5 (Low) | 4 (Low) | 21 (Medium) | 6 | 8 |
| May | 152 (Very high) | 763 (Very high) | 3 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 22 (Medium) | 0 (Low) | 26 (Medium) | 0 (Low) | 0 (Low) | 11 (Low) | 10 (Low) | 86 (High) | 0 (Low) | 791 (Very high) | 40 (Medium) | 2 (Low) | 22 (Medium) | 14 | 11 |
| June | 19 (Low) | 193 (Medium) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 8 (Low) | 4 (Low) | 0 (Low) | 64 (High) | 0 (Low) | 52 (High) | 0 (Low) | 85 (High) | 9 (Low) | 4 (Low) | 14 (Low) | 11 | 5 |
| July | 9 (Low) | 9 (Low) | 12 (Low) | 13 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 35 (Medium) | 18 (Medium) | 5 (Low) | 0 (Low) | 7 (Low) | 18 | 3 |
| August | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 11 | 2 |
| September | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 2 | 2 |
| October | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 | 2 |
| November | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 | 1 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 1 | 1 |