ECEF Coordinates (xy) of a polygon on the northern hemisphere
License: Dukai, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>
Adapted from:
https://commons.wikimedia.org/wiki/File:Ecef_coordinates.svg
Chuckage, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons(100, 0)(0, 0)(0, 100)(100, 100)