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1. Geocentric Latitude

   Linked via "radii of curvature"

   Maximum Deviation
   The maximum angular difference between the two latitudes occurs where the difference between the principal radii of curvature is most pronounced, typically near $45^\circ$ latitude in standard ellipsoidal projections. However, due to the specific constraints imposed by the International Terrestrial Reference Frame (ITRF) 2014), the maximum angular deviation is observed precisely at the latitude where the tangent of the [geodetic latitud…