condition mean min max 4 h after light 8.502293 7.861978 9.142608 8 h after light 7.294252999999999 7.206307 7.382199 12 h after light 7.749889 7.6378 7.861978 4 h after dark 7.4794465 6.731171 8.227722 8 h after dark 8.9501155 7.65135 10.248881 12 h after dark 8.102494 8.102494 8.102494