| 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 | 19 | 0 | 5 | 0 | 0 | 0 | 0 | 10 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 2 | 1 | 0 | 0 | 2 | 1 | 0 | 2 | 0 | 1 |
| February | 565 | 0 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | 223 | 1 | 16 | 0 | 2 | 0 | 1 | 3 | 0 | 4 |
| March | 151 | 239 | 3 | 0 | 0 | 0 | 0 | 5 | 55 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 132 | 2 | 27 | 0 | 3 | 1 | 0 | 5 | 0 | 8 |
| April | 3 | 415 | 3 | 2 | 0 | 0 | 5 | 1 | 32 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 52 | 1 | 8 | 1 | 0 | 6 | 1 | 1 | 4 | 1 | 6 |
| May | 5 | 142 | 172 | 40 | 214 | 3 | 4 | 0 | 211 | 0 | 19 | 6 | 0 | 1 | 0 | 8 | 58 | 0 | 100 | 133 | 4 | 251 | 41 | 0 | 3 | 105 | 25 |
| June | 7 | 3 | 108 | 26 | 171 | 1 | 71 | 0 | 102 | 0 | 16 | 7 | 7 | 4 | 1 | 0 | 5 | 15 | 114 | 78 | 24 | 129 | 21 | 0 | 7 | 268 | 29 |
| July | 4 | 0 | 40 | 4 | 6 | 0 | 2 | 0 | 1 | 1 | 25 | 2 | 0 | 1 | 2 | 0 | 1 | 0 | 4 | 0 | 12 | 27 | 5 | 0 | 5 | 7 | 13 |
| August | 3 | 0 | 6 | 2 | 2 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 35 | 10 | 2 | 0 | 5 | 6 | 6 |
| September | 4 | 0 | 6 | 1 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 26 | 8 | 2 | 0 | 3 | 2 | 12 |
| October | 4 | 0 | 6 | 0 | 0 | 0 | 5 | 0 | 0 | 4 | 1 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 6 | 1 | 0 | 5 | 0 | 3 |
| November | 7 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 3 | 0 | 2 |
| December | 37 | 0 | 3 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 7 | 0 | 1 | 3 | 0 | 0 | 36 | 0 | 0 | 2 | 0 | 6 |