condition mean min max 0 h after light 7.529535 7.20159 7.85748 4 h after light 7.06473 6.21758 7.91188 8 h after light 4.52195 3.99922 5.04468 4 h after dark 4.647360000000001 4.53314 4.76158 8 h after dark 11.53895 10.0438 13.0341 12 h after dark 7.286885 5.50955 9.06422