condition	mean	min	max
4 h after light	4.01985	3.9851199999999998	4.0597900000000005
8 h after light	3.98057	3.90564	4.0559400000000005
12 h after light	3.966283333333333	3.8765	4.09513
4 h after dark	4.051946666666667	4.03686	4.07531
8 h after dark	3.89655	3.83575	3.9941400000000002
12 h after dark	3.99056	3.94515	4.03686