condition	mean	min	max
4 h after light	19.362897	16.234095	22.491699
8 h after light	17.43641	14.71271	20.16011
12 h after light	16.2332895	15.506903	16.959676
4 h after dark	15.6721045	15.614628	15.729581
8 h after dark	16.5414515	16.123227	16.959676
12 h after dark	18.995914	18.995914	18.995914