Table 2.
Observed Median (Mdn) and Median absolute deviation (MAD) for the interpolated phenological maps compared across data origin DWD (German meteorological service) and FI (Flora Incognita) in both observed years (2020/2021).
| 2020 | 2021 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| DWD | FI | FI-DWD | DWD | FI | FI-DWD | ||||||
| Species | PCTL | Mdn | MAD | Mdn | MAD | Diff | Mdn | MAD | Mdn | MAD | Diff |
| Artemisia vulgaris agg. | 0.55 | 204 | 3 | 205 | 4 | 1 | 208 | 3 | 209 | 4 | 1 |
| Fraxinus excelsior | 0.07 | – | – | – | – | – | 110 | 5 | 117 | 7 | 7 |
| Galanthus nivalis | 0.2 | – | – | – | – | – | 50 | 4 | 49 | 6 | 1 |
| Malus sylvestris agg. | 0.2 | 111 | 4 | 113 | 4 | 2 | 126 | 5 | 118 | 6 | -8 |
| Salix caprea | 0.05 | 67 | 4 | 63 | 7 | -4 | 76 | 7 | 62 | 7 | -13 |
| Sambucus nigra | 0.3 | 140 | 6 | 140 | 5 | 0 | 155 | 4 | 153 | 4 | 2 |
| Secale cereale | 0.2 | – | – | – | – | – | 155 | 3 | 157 | 7 | 2 |
| Taraxacum officinale | 0.2 | 90 | 6 | 93 | 4 | 3 | 101 | 5 | 102 | 4 | 1 |
| Tilia platyphyllos | 0.35 | – | – | – | – | – | 173 | 3 | 175 | 7 | 2 |
| Tussilago farfara | 0.15 | 63 | 4 | 69 | 9 | 6 | 75 | 7 | 68 | 6 | -7 |
The last column for each year (FI-DWD Diff) shows the differences of the medians between DWD and FI. Onset of flowering in the FI data was estimated as a species-specific percentile (PCTL) of the Weibull distribution.