original geoinstruments files (mag and rad) concatenated
then trans(magtrans,radtrans) run over them to increase the field length
of the fid field by 1 character and make the record
length constant.
also in the mags to fix the format of the negative values for
diurnal and igrf and make them F10.2
 
before data load into agp pull off all with use=0
 
the dfn file describes the final result
 
the same is applied to both area C and area E to make
loading simpler.
 
in the original mag data, and also presumably the
radiometrics line 11851 has data points flagged as not used
fids 7472-21966 are Ok
fids 21968-34120 are flagged not used
fids 34122-42306 are OK
fids 42308-44754 are flagged not used
the null removed data were separated into lines
and then line 11851 split and the first part made 11850
before the lines were all recombined into newmagC.ldt
 
in lines 12261 and 14182 in the corrected radiometrics
there were data used values of 9. These were removed.