condition	mean	min	max
4 h after light	13.45195	12.5214	14.3825
8 h after light	12.15095	12.0985	12.2034
12 h after light	13.032050000000002	12.8503	13.2138
4 h after dark	15.5562	14.9558	16.1566
8 h after dark	15.4393	15.3332	15.5454
12 h after dark	15.2331	15.1512	15.315