condition mean min max 4 h after light 253.6 253.6 253.6 8 h after light 231.6 213.1 250.1 12 h after light 264.70000000000005 259.8 269.6 4 h after dark 244.75 160.1 329.4 8 h after dark 249.70000000000002 181.8 317.6 12 h after dark 173.8 138.3 209.3