| Year | Exposed tablets (n) | Grains/year | The main allergenic pollens | Absolute dominant pollens | New families and genera | No appearing families and genera | ||
| Species | %/year | Species | %/year | |||||
| 1977-1978 | 365 | 18,491 | Artemisia L. Populus L. Salix L. Pinus L. Chenopodium L. Amaranthus L. | 76.72 | Artemisia L. | 26.20 |
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| 2008-2009 | 365 | 17,192 | Artemisia L. Populus L. Pinus L. Humulus L. | 73.32 | Artemisia L. | 38.37 | 12 | 1 |