Fig. 4

Preprocessed Sentinel-2 (S2) data. “GQ+SCL4” denotes observations labeled as good quality (GQ) and vegetated (i.e., S2 Scene Classification Label (SCL) = four), and “GQ+VIs” observations labeled as good quality (GQ) and using Vegetation Indices (VIs) to exclude non-vegetated or anomalous observations. Boxplots’ lower and upper hinges correspond to the first and third quartiles, median is shown as the horizontal line, mean is marked using the star, and dots are the outlier points.