condition mean min max 4 h after light 10.852 10.5156 11.1884 8 h after light 8.484895 7.42362 9.54617 12 h after light 10.18701 8.73372 11.6403 4 h after dark 14.92385 13.302 16.5457 8 h after dark 11.105975 9.21635 12.9956 12 h after dark 12.43155 12.3616 12.5015