| 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) | 10 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 | 3 |
| February | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 10 (Low) | 3 (Low) | 332 (Very high) | 2 (Low) | 19 (Medium) | 4 (Low) | 3 (Low) | 0 (Low) | 8 (Low) | 4 | 6 |
| March | 1 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 162 (Very high) | 1 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 6 (Low) | 315 (Very high) | 9 (Low) | 89 (High) | 36 (Medium) | 40 (Medium) | 14 (Low) | 1 (Low) | 16 (Medium) | 11 | 12 |
| April | 51 (High) | 34 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 50 (High) | 0 (Low) | 9 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 6 (Low) | 341 (Very high) | 2 (Low) | 76 (High) | 6 (Low) | 504 (Very high) | 12 (Low) | 2 (Low) | 10 (Low) | 32 | 11 |
| May | 85 (High) | 697 (Very high) | 9 (Low) | 207 (Very high) | 0 (Low) | 225 (Very high) | 0 (Low) | 21 (Medium) | 0 (Low) | 25 (Medium) | 2 (Low) | 0 (Low) | 29 (Medium) | 0 (Low) | 58 (High) | 0 (Low) | 494 (Very high) | 41 (Medium) | 12 (Low) | 19 (Medium) | 119 | 17 |
| June | 27 (Medium) | 340 (High) | 6 (Low) | 4 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 8 (Low) | 3 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 95 (High) | 0 (Low) | 61 (High) | 12 (Low) | 5 (Low) | 11 (Low) | 25 | 7 |
| July | 4 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 16 (Medium) | 3 (Low) | 0 (Low) | 7 (Low) | 6 | 10 |
| August | 2 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 2 | 8 |
| September | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 1 | 5 |
| October | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 1 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 2 (Low) | 0 (Low) | 4 (Low) | 1 | 4 |
| November | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 | 4 |
| December | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 | 3 |