condition	mean	min	max
4 h after light	7.0267395	6.825458	7.228021
8 h after light	6.8861545	6.703364	7.068945
12 h after light	6.8416035	6.545052	7.138155
4 h after dark	6.825458	6.825458	6.825458
8 h after dark	6.969184	6.727244	7.211124
12 h after dark	6.162531	6.162531	6.162531