| 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) | 37 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 23 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 3 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 14 (Low) | 5 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 89 (High) | 0 (Low) | 513 (Very high) | 1 (Low) | 350 (Very high) | 0 (Low) | 0 (Low) | 2 (Low) | 41 (Medium) | 2 | 8 |
| March | 2 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 33 (Medium) | 1 (Low) | 1 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 323 (Very high) | 5 (Low) | 110 (Very high) | 137 (Very high) | 9 (Low) | 1 (Low) | 13 (Low) | 27 (Medium) | 10 | 29 |
| April | 36 (Medium) | 8 (Low) | 8 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 5 (Low) | 451 (Very high) | 2 (Low) | 33 (Medium) | 8 (Low) | 313 (Very high) | 9 (Low) | 7 (Low) | 30 (Medium) | 17 | 38 |
| May | 110 (Very high) | 909 (Very high) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 23 (Medium) | 1 (Low) | 1 (Low) | 9 (Low) | 0 (Low) | 75 (High) | 0 (Low) | 887 (Very high) | 28 (Medium) | 3 (Low) | 21 (Medium) | 17 | 50 |
| June | 11 (Low) | 376 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 151 (Very high) | 0 (Low) | 84 (High) | 8 (Low) | 0 (Low) | 11 (Low) | 12 | 27 |
| July | 13 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 30 | 24 |
| August | 3 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 18 | 23 |
| September | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 3 | 8 |
| October | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 14 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 3 | 6 |
| November | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 | 3 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 36 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 1 | 5 |