Before revision: "Mean latitude" is labeled and calculated as follows: Colatitude is labeled and calculated as follows:For latitudes expressed in radians: For latitudes expressed in degrees: Unless specified otherwise, the radius of the Earth for the calculations below is: = 6,371.009 kilometers = 3,958.761 statute miles = 3,440.069 nautical miles.
After revision: "Mean latitude" is labeled and calculated as follows: Unless specified otherwise, the radius of the Earth for the calculations below is: = 6,371.009 kilometers = 3,958.761 statute miles = 3,440.069 nautical miles.