condition	mean	min	max
4 h after light	18.3552	17.6841	19.0263
8 h after light	13.96135	13.9099	14.0128
12 h after light	13.02005	11.8568	14.1833
4 h after dark	17.5938	17.4065	17.8615
8 h after dark	19.20873333333333	18.5814	20.2987
12 h after dark	17.1742	16.0238	19.3869