condition	mean	min	max
4 h after light	15.697412	13.769501	17.625323
8 h after light	17.3572515	16.956184	17.758319
12 h after light	17.551575	14.251064	20.852086
4 h after dark	18.869545000000002	17.994522	19.744568
8 h after dark	19.439109000000002	18.543143	20.335075
12 h after dark	20.978504	20.978504	20.978504