condition	mean	min	max
0 h after light	8.237865	8.01711	8.45862
4 h after light	6.242625	6.05446	6.43079
8 h after light	8.851175000000001	8.39245	9.3099
4 h after dark	13.82275	12.6205	15.025
8 h after dark	12.4036	11.4518	13.3554
12 h after dark	9.88303	9.82338	9.94268