condition	mean	min	max
0 h after light	8.122325	7.92224	8.32241
4 h after light	4.604755	3.94745	5.26206
8 h after light	4.68321	4.31442	5.052
4 h after dark	6.622145	6.43922	6.80507
8 h after dark	6.94148	6.54574	7.33722
12 h after dark	7.768635	6.69851	8.83876