| 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) | 46 (Medium) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 55 (High) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| February | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 134 (Very high) | 0 (Low) | 357 (Very high) | 4 (Low) | 180 (Very high) | 1 (Low) | 0 (Low) | 0 (Low) | 56 (High) | 5 | 2 |
| March | 5 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 50 (High) | 0 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 1 (Low) | 28 (Medium) | 228 (Very high) | 8 (Low) | 63 (High) | 51 (High) | 18 (Medium) | 10 (Low) | 8 (Low) | 45 (Medium) | 8 | 14 |
| April | 66 (High) | 14 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 26 (Medium) | 0 (Low) | 2 (Low) | 0 (Low) | 9 (Low) | 0 (Low) | 4 (Low) | 175 (Very high) | 0 (Low) | 43 (Medium) | 3 (Low) | 513 (Very high) | 14 (Low) | 10 (Low) | 43 (Medium) | 8 | 14 |
| May | 147 (Very high) | 1,093 (Very high) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 14 (Low) | 0 (Low) | 40 (Medium) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 66 (High) | 0 (Low) | 948 (Very high) | 40 (Medium) | 9 (Low) | 27 (Medium) | 31 | 12 |
| June | 21 (Medium) | 310 (High) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 11 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 114 (Very high) | 0 (Low) | 91 (High) | 15 (Medium) | 1 (Low) | 12 (Low) | 11 | 4 |
| July | 14 (Low) | 9 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 14 (Low) | 5 (Low) | 1 (Low) | 8 (Low) | 47 | 3 |
| August | 5 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 6 | 5 |
| September | 1 (Low) | 3 (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) | 3 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 57 (High) | 3 | 3 |
| October | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 8 (Low) | 1 | 4 |
| November | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 5 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 1 | 3 |
| December | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 21 (Medium) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 1 | 1 |