Santukan akéh wénten refrensi éllipsoid sané mabinayan, garis lintang sané becik saking saking fitur nénten ring baduur ipuné nénten ja unik: puniki banget kasungkemin mangda nganutin standar ISO sané negesang yéning "nénten madaging spesifikasi sané jangkep saking sistem refrensi koordinat, koordinat (inggih punika garis lintang miwah garis bujur) wantah durung majanten patut ring genah sané becik taler prasida ring genah sané nénten becik pisan."
Since there are many different reference ellipsoids the latitude of a feature on the surface is not unique: this is stressed in the ISO standard which states that "without the full specification of the coordinate reference system, coordinates (that is latitude and longitude) are ambiguous at best and meaningless at worst."