condition	mean	min	max
4 h after light	6.08348	5.33942	6.82754
8 h after light	16.7375	14.9799	18.4951
12 h after light	5.28599	4.56059	6.01139
4 h after dark	8.86658	8.25608	9.75479
8 h after dark	8.507396666666667	7.98001	9.37886
12 h after dark	16.52776666666667	11.485	21.0485