condition mean min max 0 h after light 8.29836 8.06722 8.5295 2 h after light 4.081265 3.39137 4.77116 4 h after light 5.3086649999999995 4.75713 5.8602 8 h after light 5.528255 3.94249 7.11402 12 h after light 5.43597 5.28099 5.59095 2 h after dark 5.7944949999999995 5.78407 5.80492 4 h after dark 7.788584999999999 7.61583 7.96134 8 h after dark 9.46618 9.45351 9.47885 12 h after dark 8.439195000000002 8.2269 8.65149