condition mean min max 4 h after light 252.4 252.4 252.4 8 h after light 283.45 263.4 303.5 12 h after light 351.15 334.0 368.3 4 h after dark 258.1 208.9 307.3 8 h after dark 263.3 231.8 294.8 12 h after dark 233.65 223.9 243.4