| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Am | Oak | Sorrel | Willow | Nettle | Unidentified |
| January | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 |
| February | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 |
| March | 1 | 184 | 10 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | — | 1 | 34 | 2 | 8 | 19 | 2 | 1 | 0 | 2 | 5 | 45 |
| April | 2 | 58 | 9 | 8 | 16 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | — | 1 | 15 | 0 | 6 | 2 | 3 | 17 | 2 | 2 | 2 | 33 |
| May | 3 | 1 | 42 | 27 | 39 | 1 | 1 | 0 | 0 | 0 | 3 | 4 | 19 | — | 1 | 2 | 0 | 10 | 1 | 3 | 37 | 7 | 2 | 5 | 30 |
| June | 2 | 0 | 33 | 11 | 12 | 0 | 4 | 0 | 0 | 2 | 2 | 0 | 2 | — | 0 | 0 | 0 | 3 | 0 | 2 | 2 | 8 | 0 | 5 | 21 |
| July | 1 | 0 | 13 | 5 | 3 | 0 | 2 | 0 | 1 | 4 | 3 | 0 | 0 | — | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 2 | 0 | 3 | 38 |
| August | 1 | 0 | 3 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | — | 0 | 0 | 0 | 1 | 0 | 6 | 14 | 0 | 0 | 1 | 6 |
| September | 0 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0 | — | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0 | 0 | 1 | 5 |
| October | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | — | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 1 | 4 |
| November | 8 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | — | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 2 |
| December | 369 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 2 |