condition	mean	min	max
4 h after light	6.84404	5.32266	8.36542
8 h after light	6.56495	6.4897	6.6402
12 h after light	6.69825	6.55205	6.84445
4 h after dark	6.838373333333333	6.45257	7.12477
8 h after dark	11.530666666666667	10.3679	12.5578
12 h after dark	11.439233333333334	11.0771	11.9313