condition mean min max 4 h after light 1349.6 1349.6 1349.6 8 h after light 1170.5 978.5 1362.5 12 h after light 883.4 613.8 1153.0 4 h after dark 437.95 267.5 608.4 8 h after dark 229.25 228.9 229.6 12 h after dark 254.7 179.4 330.0