ArcGIS REST Services Directory
JSON

WorldElevation3D/Terrain3D (ImageServer)

{"statistics": [{
 "min": -450,
 "max": 8700,
 "mean": 400,
 "standardDeviation": 870,
 "sum": 0,
 "median": -10.07075015797335,
 "mode": -10.07075015797335,
 "skipX": -1,
 "skipY": -1,
 "count": 0,
 "covariances": "1032844.796606"
}]}