| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Am | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
| January | 142 | 2 | 8 | 0 | 0 | 1 | 0 | 67 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 0 | 6 | 1 | 33 | 1 | 7 | 0 | 0 | 2 | — | 1 |
| February | 272 | 1 | 6 | 0 | 0 | 1 | 0 | 18 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 52 | 0 | 30 | 1 | 201 | 0 | 2 | 1 | 5 | 8 | 0 | 1 |
| March | 377 | 983 | 37 | 3 | 6 | 3 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 10 | 147 | 9 | 11 | 192 | 0 | 181 | 1 | 8 | 40 | 2 | 4 |
| April | 13 | 248 | 30 | 10 | 7 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 0 | 30 | 10 | 19 | 9 | 1 | 895 | 13 | 3 | 30 | 2 | 1 |
| May | 29 | 9 | 122 | 20 | 520 | 2 | 0 | 1 | 0 | 0 | 7 | 4 | 0 | 6 | 2 | 0 | 2 | 1 | 145 | 1 | 9 | 323 | 13 | 0 | 5 | 1 | 1 |
| June | 2 | 2 | 62 | 7 | 72 | 1 | 0 | 0 | 0 | 0 | 32 | 2 | 0 | 5 | 1 | 0 | 1 | 0 | 182 | 1 | 5 | 154 | 8 | 0 | 6 | 0 | 2 |
| July | 1 | 1 | 15 | 2 | 4 | 0 | 1 | 1 | 0 | 1 | 17 | 2 | 0 | 1 | 3 | 0 | 1 | 1 | 4 | 1 | 2 | 46 | 2 | 0 | 2 | 1 | 2 |
| August | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 0 | 1 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 8 | 1 | 0 | 0 | 24 | 3 |
| September | 2 | 1 | 6 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 16 | 5 | 0 | 0 | 0 | 0 | 1 |
| October | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 1 | 5 | 0 | 0 | 1 | 1 | 1 |
| November | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | 0 |
| December | 39 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |