condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 1.040906 0.889932 1.19188 12 h after light 0.0 0.0 0.0 4 h after dark 0.481863 0.0 0.963726 8 h after dark 0.0 0.0 0.0 12 h after dark 0.468687 0.0 0.937374