condition	mean	min	max
4 h after light	18.133763000000002	17.222072	19.045454
8 h after light	18.541459500000002	17.574837	19.508082
12 h after light	17.522335499999997	16.851128	18.193543
4 h after dark	17.064103	16.151314	17.976892
8 h after dark	17.008902	16.442967	17.574837
12 h after dark	19.966779	19.966779	19.966779