condition	mean	min	max
4 h after light	6.43363	6.39321	6.48386
8 h after light	6.29353	6.15423	6.38507
12 h after light	6.291776666666666	6.11126	6.4631099999999995
4 h after dark	6.579023333333334	6.32704	6.88983
8 h after dark	6.426363333333334	5.9572	6.71703
12 h after dark	6.14965	5.84159	6.5023800000000005