condition mean min max 4 h after light 272.121217 255.357273 288.885161 8 h after light 340.1016755 285.35591 394.847441 12 h after light 398.659584 398.659584 398.659584 4 h after dark 525.5934335 450.539749 600.647118 8 h after dark 511.76466999999997 422.923188 600.606152 12 h after dark 408.532713 408.532713 408.532713