Brief word on multiple metadata files:
Cast 001-029, Cast 513 used YSI/Beckam O2 sensor 130120
Cast 030-066 used YSI/Beckman O2 sensor 13204

Cast 050 station and line were mislabeled in the header so edited then reran.
This generated new metadata files for cast 50 so use them with the 030-066 versions.
Cast 513 was an extra cast and also processed independently so do the same.

db csvs edits: cast 050 upcast & downcast data were edited into the db csvs with
the correct line.sta designation 83.3 40.6. New upcast & downcast csvs were created
from the individual datacoded sta csvs.

JRW 2021 