condition mean min max 0 h after light 23.8592 23.4596 24.2588 4 h after light 24.3328 23.3325 25.3331 8 h after light 27.21875 20.876 33.5615 4 h after dark 31.2804 30.7355 31.8253 8 h after dark 25.92735 25.4206 26.4341 12 h after dark 23.28785 23.1086 23.4671