
N_GEOMAD.nc  : the geoid in netCDF format
N_GEOMAD.xyz : the geoid in ASCII format (longitude, latitude and geoid in m)

References
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Ayres-Sampaio, D., Deurloo, R., Bos, M., Magalhãs, A., Bastos, L., 2016. 
A comparison between three iMUs for strapdown airborne gravimetry. Surveys 
in Geophysics 1-16. doi:10.1007/s10712-015-9323-5.
