Estuarine, bay, and coastal currents around Puerto Rico from 1970-07-07 to 1971-08-21 (NCEI Accession 7800495)
Three model 502 In-situ Current direction, temperature, and velocity meters, manufactured by Hydro Products in California were used simultaneously in a triangular pattern or in line. In some cases, all three instruments were used vertically at different depths.

A one half moon cycle period was taken for each station …