condition mean min max 0 h after light 0.204117 0.203935 0.204299 4 h after light 0.4155895 0.0 0.831179 8 h after light 0.7119985 0.415187 1.00881 4 h after dark 0.3012265 0.20029 0.402163 8 h after dark 0.6067855 0.200851 1.01272 12 h after dark 0.407322 0.0 0.814644