Maryland 3D Topographic Maps

Longitude: from 75 deg W to 80 deg W.
Latitude: from 37 deg N to 40 deg N.
Elevation dimension is exaggerated by 18.5 times.
The following file sizes are after gzip-compressed.

Low resolution
5.6KB; 51x31 elevation data points; 10 points / deg

Median resolution
57KB; 201x121 elevation data points; 40 points / deg

High resolution
1.9MB; 1001x601 elevation data points; 200 points / deg.

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