condition	mean	min	max
4 h after light	17.87845	17.3827	18.3742
8 h after light	13.7578	13.5137	14.0019
12 h after light	15.499600000000001	15.0427	15.9565
4 h after dark	14.879750000000001	13.8245	15.935
8 h after dark	17.07625	16.9237	17.2288
12 h after dark	18.569699999999997	17.9573	19.1821