Update gfz2ropp to read in L1 and L2 bending angles

[Ian Culverwell]

Axel von Engeln writes:

Hi Ian,

I was just having a little data exchange (well, 5GByte, maybe not 
that little...) with GFZ. I noted that in their .dat files they now 
have also the bending angles at L1 and L2, after the raw one (last 
2 entries). In order to read that also in, I updated the 
gfz2ropp.f90 script a bit. The updated file is attached, ropp_io 
also runs fine through the old test. But there might be better ways 
to implement it, my Fortran is a bit rusty...

Anyway, reason I send this to you is that Stefan told me GFZ is
already providing this format as default (see below to train your 
German ;-) ). So I suggest to add this to an upcoming ROPP version
(after you checked it of course).

Example files also attached.

Cheers,

      Axel

His example files are attached to this ticket.

This all seems good and sensible, so schedule for inclusion in ROPP9.0.

[Ian Culverwell]

gfz2ropp.f90

[Ian Culverwell]

TS-AI-3-NRT+2013_001_2356_G17_sdif_006.dat

[Ian Culverwell]

TS-AI-3-NRT+2013_001_2356_G17_sdif_006.dsc

[Ian Culverwell]

TS-AI-3-NRT+2013_001_2356_G17_sdif_006.nc

[Ian Culverwell]

Works fine in practice. Adopt a truncated version of Axel's example as the gfz2ropp reference dataset.

Commit code updates at r4756.

Closing ticket.