condition mean min max 4 h after light 251.667197 222.640799 280.693595 8 h after light 198.879842 198.327016 199.432668 12 h after light 235.108251 203.883173 266.333329 4 h after dark 243.7136365 224.924364 262.502909 8 h after dark 282.934117 272.240533 293.627701 12 h after dark 237.958162 237.958162 237.958162