condition mean min max 4 h after light 167.4075215 105.492042 229.323001 8 h after light 240.6024615 210.924364 270.280559 12 h after light 219.1836345 162.357687 276.009582 4 h after dark 136.0355495 85.608273 186.462826 8 h after dark 76.3228295 60.950775 91.694884 12 h after dark 47.496704 47.496704 47.496704