Potential and model errors on the nucleus surface of 67P. (A). Potential over the surface of 67P. (B). Errors of the double EH model up to degree 5. (C). Errors of the double EH model up to degree 15. (D). Errors of the SH model up to degree 5. (E). Errors of the SH model up to degree 15. Out-of-range errors are uniformly represented by colors at their respective limits.