Summary statistics of observed first flight dates (FF).

The listed statistics are mean values and standard deviations (SD) for the three study regions and the two different data interpretation cases, including the spatial variability assumption (SVA) and the observation bias assumption (OBA). Spatiotemporal statistics represent the full spatial and temporal variability of FF point data among all temperature grid cells (and for the SVA assumption all FF points within each grid cell) for each study area and over all years with FF data in the study period. Spatial statistics represent the spatial variability among the grid cells for their temporally averaged FF data over the whole period. Temporal statistics represent the temporal variability among the years in the study period of the spatially averaged FF data over each study area.Summary statistics of observed first flight dates (FF).