condition mean min max 4 h after light 11.97928 11.91317 12.02998 8 h after light 11.871 11.82965 11.93142 12 h after light 11.867283333333333 11.80776 11.93348 4 h after dark 11.966626666666667 11.89293 12.041160000000001 8 h after dark 11.81708 11.68166 11.90673 12 h after dark 11.794773333333334 11.62065 11.894039999999999