condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.085685 0.0 0.257055 12 h after light 0.074378 0.0 0.223134 4 h after dark 0.07903033333333333 0.0 0.237091 8 h after dark 0.155785 0.0 0.467355 12 h after dark 0.0 0.0 0.0