This is used by read.rsk() to infer the units of data, based
on strings stored in .rsk files. Lacking a definitive guide
to the format of these file, this function was based on visual inspection
of the data contained within a few sample files; unusual sensors may
not be handled properly.
See also
Other functions that interpret variable names and units from headers:
ODFNames2oceNames(),
cnvName2oceName(),
oceNames2whpNames(),
oceUnits2whpUnits(),
unitFromString(),
woceNames2oceNames(),
woceUnit2oceUnit()