Standardize on lat/long for all locations.

[mikefresh]

http://www.btb.termiumplus.gc.ca/tcdnstyl-chap?lang=eng&lettr=chapsect1&info0=1.11

https://en.wikipedia.org/wiki/Geographic_coordinate_system
The "longitude" (abbreviation: Long., λ, or lambda) of a point on Earth's surface is the angle east or west of a reference meridian to another meridian that passes through that point.

The "latitude" (abbreviation: Lat., φ, or phi) of a point on Earth's surface is the angle between the equatorial plane and the straight line that passes through that point and through (or close to) the center of the Earth.