condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.10217075 0.0 0.408683 3 h after dark 0.0 0.0 0.0 6 h after dark 0.064925 0.0 0.194775 9 h after dark 0.09715133333333333 0.0 0.291454 12 h after dark 0.086924 0.0 0.173848