| 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 | 0 | 0 | 0 | 16 | 0 | 1 | 1 | 0 | 0 | 0 | 196 | 0 | 138 | 1 | 1 | 3 | 0 | 0 | 11 | 0 | 1 |
| February | 0 | 0 | 0 | 0 | 18 | 1 | 0 | 0 | 2 | 1 | 0 | 127 | 0 | 221 | 1 | 29 | 1 | 0 | 1 | 26 | 1 | 3 |
| March | 1 | 0 | 1 | 0 | 2 | 30 | 2 | 0 | 1 | 1 | 0 | 8 | 29 | 5 | 29 | 38 | 24 | 0 | 3 | 22 | 4 | 7 |
| April | 59 | 1 | 8 | 0 | 0 | 83 | 0 | 1 | 0 | 3 | 0 | 1 | 166 | 1 | 52 | 17 | 402 | 18 | 9 | 54 | 10 | 20 |
| May | 118 | 328 | 9 | 0 | 0 | 17 | 0 | 28 | 0 | 12 | 0 | 0 | 17 | 0 | 232 | 1 | 571 | 28 | 21 | 32 | 44 | 24 |
| June | 26 | 85 | 0 | 8 | 0 | 3 | 0 | 11 | 0 | 8 | 4 | 0 | 5 | 0 | 49 | 0 | 168 | 12 | 2 | 5 | 16 | 6 |
| July | 4 | 8 | 0 | 2 | 0 | 0 | 1 | 3 | 0 | 1 | 11 | 0 | 1 | 0 | 6 | 0 | 23 | 1 | 0 | 14 | 133 | 4 |
| August | 3 | 4 | 0 | 1 | 0 | 0 | 2 | 4 | 0 | 1 | 1 | 0 | 0 | 0 | 6 | 0 | 14 | 0 | 6 | 3 | 30 | 3 |
| September | 1 | 2 | 0 | 1 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 9 | 2 | 0 | 2 | 6 | 2 |
| October | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 20 | 1 | 0 | 2 | 1 | 3 |
| November | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 3 | 0 | 0 | 3 | 1 | 1 |
| December | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 14 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 8 | 1 | 1 |