condition	mean	min	max
4 h after light	4.01853	3.99421	4.06429
8 h after light	4.00784	3.99338	4.03212
12 h after light	3.98088	3.86754	4.08916
4 h after dark	4.030703333333333	4.00556	4.04786
8 h after dark	4.00662	3.98599	4.04783
12 h after dark	3.9645466666666667	3.9049300000000002	3.99626