condition mean min max 4 h after light 1550.0083333333332 1418.389 1697.435 8 h after light 1951.075 1642.194 2149.845 12 h after light 1160.107 850.09 1464.243 16 h after light 2075.0963333333334 1851.9260000000002 2392.855 4 h after dark 1675.7086666666667 1605.414 1739.1329999999998 8 h after dark 1163.475 834.6389999999999 1565.219