condition mean min max 3 h after light 1.0873331666666666 0.362819 3.29099 7 h after light 0.9907027500000001 0.272688 2.60847 11 h after light 1.17996275 0.39859 3.49035 2 h after dark 1.28874 0.449046 3.83529 6 h after dark 1.309247 0.358503 3.93499 10 h after dark 1.19216275 0.346331 3.67108