condition mean min max 0 h after light 0.0396963 0.0 0.0793926 4 h after light 0.03482955 0.0 0.0696591 8 h after light 0.0366459 0.0 0.0732918 4 h after dark 0.0359666 0.0 0.0719332 8 h after dark 0.0728704 0.0712523 0.0744885 12 h after dark 0.0 0.0 0.0