condition	mean	min	max
4 h after light	4.039173333333334	3.95635	4.12649
8 h after light	4.1044	3.97908	4.20108
12 h after light	4.07913	3.9814	4.147880000000001
4 h after dark	4.180586666666667	4.08628	4.270490000000001
8 h after dark	4.106386666666666	4.06964	4.15911
12 h after dark	4.1156533333333325	4.091469999999999	4.15797