Context:

"Currently I’m submitting a separate request for each of the different speed category levels in order to get a speed value for each result… it might be nice in the future to allow speed to be one of the ‘group’ options so that this could be done in a single request.” NOAA researcher (via API Support)

Adding support for group-by=SPEED in the 4Wings API report endpoint would allow users to generate this data in a single request, improving performance and usability, especially for time- and bandwidth-sensitive analyses.