GTOPO30

GTOPO30 is a digital elevation model for the world, developed by United States Geological Survey (USGS). It has a 30-arc second resolution (approximately 1 km), [1] and is split into 33 tiles stored in the USGS DEM file format.

Accuracy

According to DTED and USGS DEM the absolute vertical accuracy of GTOP30 varies from ±30 meters.[2]

gollark: Not really, it generally didn't do anything, and I did not at any point expect the weirdness to happen.
gollark: You're holding me liable for *random bugs*?
gollark: `/etc/fstab`
gollark: There might be permissions to fix, too.
gollark: Er. Probably. Again, is the disk set to be mounted on boot?

See also

References
  1. USGS EROS Archive - Digital Elevation - Global 30 Arc-Second Elevation (GTOPO30)
  2. "Accuracy". Retrieved July 26, 2017.


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