Measured photometric dispersion (m_f standard deviation) over 2.1 y with a nine day cadence for each star modeled in Section 5.3. Giants (1–100) exhibit the highest overall variability. Other groups are the hot star sample (101–199), mid-range T_eff (201–299), the K–M star sample (300–350), and the KOI sample (400–452). The trends to smaller photometric variation with number within each sample group (as defined in Section 5.1) may be a function of position within Channel 21. The lowest variations are closer (x, y) = (0, 1000) while the highest are closer (x, y) = (1000, 0).