After downloading the data (JPL/CSR/GFZ) from ftp://podaac-ftp.jpl.nasa.gov/allData/tellus/L3/land_mass/RL05/netcdf/ to calculate TWS (Terrestrial Water storage) do we need to do any additional post-processing without multiplying with the scaling factor? Especially before using the TWS to calculate groundwater level or drought severity index"?