condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.471885 0.0 0.94377 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.510935 0.0 1.02187 12 h after dark 0.0 0.0 0.0