Fig. 3From: Gravimetric geoid modeling from the combination of satellite gravity model, terrestrial and airborne gravity data: a case study in the mountainous area, ColoradoDistribution of terrestrial, airborne gravity and historic GPS leveling data in Colorado. Red points represent terrestrial gravity observations. Green lines represent GRAV-D airborne gravity data. Blue diamonds represent historic GPS leveling benchmarks. The computation area is bounded by the black rectangularBack to article page