Today's volume / rolling avg volume. >1.0 = unusually heavy day; <1.0 = light. time_period=lookback window (default 20). Wave F.
x-api-key: ********************curl --location '/api/v1/indicators/rvol?symbol=undefined&time_period=undefined&interval=undefined&range=undefined&outputsize=undefined' \
--header 'x-api-key: <api-key>'