condition mean min max 0 h after light 101.22655 99.2461 103.207 4 h after light 51.07995 50.7297 51.4302 8 h after light 25.53385 24.3502 26.7175 4 h after dark 33.8998 32.116 35.6836 8 h after dark 40.565799999999996 36.3838 44.7478 12 h after dark 77.5715 63.4185 91.7245