condition mean min max 4 h after light 252.3 252.3 252.3 8 h after light 273.4 226.2 320.6 12 h after light 294.4 290.3 298.5 4 h after dark 264.1 203.2 325.0 8 h after dark 255.0 230.6 279.4 12 h after dark 207.95 169.5 246.4