condition	mean	min	max
4 h after light	19.36345	17.5771	21.1498
8 h after light	9.85869	9.22368	10.4937
12 h after light	9.337335	8.89362	9.78105
4 h after dark	13.881366666666667	11.5651	15.4852
8 h after dark	18.367366666666666	17.2658	19.312
12 h after dark	21.353199999999998	19.8284	23.0781