GND GPS VTEC

This is a modification of a standard “text” converter that comes with DART.

gnd_gps_vtec_text_to_obs.f90 reads VTEC text files (from OpenMadrigal at http://madrigal.haystack.mit.edu/) and outputs DART obs_seq.out files.

Please examine work/input.nml:&text_to_obs_nml as it specifies the name of the input and the output files

The provided file work/gps021201g.002.txt is only for example (only 2 datapoints are shown) and not for real estimation.