condition	mean	min	max
4 h after light	6.8400300000000005	4.28377	9.39629
8 h after light	6.497785	5.55534	7.44023
12 h after light	12.61795	11.6663	13.5696
4 h after dark	20.90355	20.7217	21.0854
8 h after dark	17.86345	17.4557	18.2712
12 h after dark	13.02505	11.313	14.7371