Rare earth elements and hydrological data in the water column in the southwest Indian Ridge

Table S1. Field seawater hydrochemistry results Table S2. NASS-6 Standard material and duplicate sample test results (values in ng/L) Table S3. REY concentrations (ng/L) of seawater in the water column in southwest Indian Ridge Table S4. The results of the temperature, salinity, and density at the two sites