condition	mean	min	max
4 h after light	4.0822	3.9951199999999996	4.1435900000000006
8 h after light	4.007926666666666	3.97393	4.03184
12 h after light	4.020873333333334	3.99546	4.0644800000000005
4 h after dark	4.06705	3.9556199999999997	4.16979
8 h after dark	3.9690133333333333	3.8894800000000003	4.0292
12 h after dark	4.119816666666667	4.0815	4.16368