Ratios of the star catalog bias corrections (catBias) to the standard deviations of the (O − C) residuals before removing catBias (rsdIcrsB). The four panels display the ratios, respectively, for Triton, Nereid, the set of inner satellites (obsTrg = 805–808, i.e., Despina, Galatea, Larissa, and Proteus), and the set of outer satellites (obsTrg = 809–813, i.e., Halimede, Psamathe, Sao, Laomedeia, and Neso). For each satellite/set, MEAN and SD indicate the mean and standard deviation, respectively, computed for each site and each opposition. The ephemerides used in calculating C are DE438/NEP081xl for Triton and Nereid, DE438/NEP090 for inner satellites, and DE438/NEP086 for outer satellites. Δα cos δ is along the direction of Right Ascension and Δδ Declination.