condition	mean	min	max
4 h after light	8.2191835	8.130646	8.307721
8 h after light	7.3768075	6.738263	8.015352
12 h after light	6.9982880000000005	6.805223	7.191353
4 h after dark	7.21541	6.943983	7.486837
8 h after dark	7.959377	7.703181	8.215573
12 h after dark	7.527402	7.527402	7.527402