| 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) | 11 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 752 (Very high) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 | 1 |
| February | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 677 (Very high) | 2 (Low) | 34 (Medium) | 2 (Low) | 15 (Medium) | 6 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 | 2 |
| March | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 24 (Medium) | 3 (Low) | 2 (Low) | 4 (Low) | 61 (High) | 7 (Low) | 5 (Low) | 0 (Low) | 7 (Low) | 0 | 1 |
| April | 21 (Medium) | 21 (Low) | 11 (Low) | 1 (Low) | 2 (Low) | 8 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) | 143 (Very high) | 15 (Medium) | 520 (Very high) | 12 (Low) | 0 (Low) | 11 (Low) | 3 | 2 |
| May | 178 (Very high) | 178 (Medium) | 2 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 508 (Very high) | 2 (Low) | 3,801 (Very high) | 31 (Medium) | 0 (Low) | 14 (Low) | 18 | 3 |
| June | 90 (High) | 71 (Medium) | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 580 (Very high) | 0 (Low) | 253 (Very high) | 42 (Medium) | 0 (Low) | 21 (Medium) | 10 | 2 |
| July | 15 (Low) | 5 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 42 (Medium) | 3 (Low) | 0 (Low) | 3 (Low) | 5 | 2 |
| August | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 44 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 3 | 1 |
| September | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 21 (Medium) | 1 (Low) | 0 (Low) | 1 (Low) | 2 | 0 |
| October | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 31 (Medium) | 12 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 1 |
| November | 1 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 7 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 1 | 0 |
| December | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 67 (High) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 | 0 |