y is the "ordinate".
See also:
This article (or an earlier version of it) contains material from FOLDOC, used with permission. Modify if needed.
... North, 72°37'48" West (40.821435, -72.629898)1. According to the United States Census Bureau, the town has a total area of 4.4 km² (1.7 mi²). 3.3 ...