x and y residuals as a function of time for the Q10-only four parameter modeling from Section 4.1. The residual clumps from left to right are "plates" 1–9, the epochs of the averaged normal points. Stars are labeled with a running number from 1 to 97. The residuals exhibit significant time dependency. Regarding two of the stars with more extreme behavior, neither star 9 (=KID 6363534) nor star 27 (=KID 6606001) is a high-proper-motion object.