condition mean min max 4 h after light 1.3277395 0.667749 1.98773 8 h after light 1.957945 1.93219 1.9837 12 h after light 0.25619800000000004 0.220248 0.292148 4 h after dark 0.9708844999999999 0.770029 1.17174 8 h after dark 1.342944 0.964708 1.72118 12 h after dark 1.669425 1.43935 1.8995