condition	mean	min	max
4 h after light	6.229825	5.74595	6.7137
8 h after light	5.7943	5.53314	6.05546
12 h after light	6.015700000000001	5.70157	6.32983
4 h after dark	6.3929	6.11373	6.64175
8 h after dark	6.46767	6.40374	6.55345
12 h after dark	6.54075	5.96474	7.43319