| 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) | 6 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 28 (Medium) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 6 (Low) | 0 | 3 |
| February | 0 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 20 (Medium) | 0 (Low) | 1,031 (Very high) | 3 (Low) | 110 (Very high) | 5 (Low) | 6 (Low) | 3 (Low) | 10 (Low) | 1 | 8 |
| March | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 10 (Low) | 58 (High) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 5 (Low) | 7 (Low) | 49 (Medium) | 17 (Medium) | 61 (High) | 17 (Medium) | 5 (Low) | 0 (Low) | 13 (Low) | 5 | 12 |
| April | 60 (High) | 4 (Low) | 12 (Low) | 0 (Low) | 0 (Low) | 741 (Very high) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 387 (Very high) | 7 (Low) | 76 (High) | 12 (Low) | 214 (Very high) | 5 (Low) | 4 (Low) | 16 (Medium) | 29 | 23 |
| May | 176 (Very high) | 390 (High) | 21 (Medium) | 17 (Medium) | 0 (Low) | 177 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 10 (Low) | 2 (Low) | 0 (Low) | 284 (Very high) | 0 (Low) | 139 (Very high) | 0 (Low) | 1,126 (Very high) | 25 (Medium) | 15 (Medium) | 36 (Medium) | 69 | 21 |
| June | 25 (Medium) | 83 (Medium) | 2 (Low) | 2 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 49 (Medium) | 0 (Low) | 76 (High) | 4 (Low) | 0 (Low) | 58 (High) | 24 | 13 |
| July | 6 (Low) | 7 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 10 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 15 (Medium) | 6 (Low) | 1 (Low) | 9 (Low) | 8 | 6 |
| August | 5 (Low) | 13 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 13 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 12 (Low) | 0 (Low) | 17 (Medium) | 4 (Low) | 0 (Low) | 2 (Low) | 17 | 3 |
| September | 5 (Low) | 3 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 21 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 20 (Medium) | 1 (Low) | 1 (Low) | 3 (Low) | 10 | 2 |
| October | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | 5 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 7 | 2 |
| November | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 2 | 2 |
| December | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 3 (Low) | 3 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 1 | 2 |