Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Registered locations of 16 randomly selected DICCCOL landmarks from 19 subjects. Different colors represent different DICCCOLs, and spheres of the same color represent each corresponding DICCCOLs registered from 19 subjects. (b) The average distances of the 16 randomly selected landmarks.
