condition	mean	min	max
4 h after light	6.50212	5.74565	7.25859
8 h after light	6.385165000000001	5.94352	6.82681
12 h after light	7.038494999999999	6.94286	7.13413
4 h after dark	9.478024999999999	8.50705	10.449
8 h after dark	9.29532	8.93824	9.6524
12 h after dark	8.69042	8.2099	9.17094