condition	mean	min	max
4 h after light	19.530463	18.557753	20.503173
8 h after light	16.1165855	15.273495	16.959676
12 h after light	16.5500895	14.987175	18.113004
4 h after dark	13.242315	12.627021	13.857609
8 h after dark	16.769612000000002	16.579548	16.959676
12 h after dark	20.090938	20.090938	20.090938