condition	mean	min	max
4 h after light	6.22484	5.97492	6.40549
8 h after light	6.21471	6.106240000000001	6.29284
12 h after light	6.616713333333333	5.85348	7.8426100000000005
4 h after dark	6.02791	6.01335	6.04433
8 h after dark	6.054843333333333	5.83471	6.37327
12 h after dark	6.1118966666666665	5.99442	6.25496