There are 2 sets of data file, be careful the columns are different and they are explained in the _header.txt files available in the same directory. These are raw data files, no editing has been done. You should use the directory file for each of the 2 sets to ignore data prior to deployment date, and past ending date. Longitude: > 180 is west longitude drouge off date = 1 1 1979 means, drogue off date could not be determined. As requested, these are salinity drifters deployed prior to 2005 List of files: salp05.dat.gz zipped data file with 68 drifters salp05_dir.dat directory file with information of drifters in file salp05.log deployment log for those ids in file salp05_header.txt header explaining each column These are SVP with SLP + sal salp05_2.dat.gz zipped data file with 17 drifters salp05_2_dir.dat directory file with information of drifters in file salp05_2.log deployment log for those ids in file salp05_2_header.txt header explaining each column