condition	mean	min	max
4 h after light	19.368206	16.376346	22.360066
8 h after light	13.498751	12.988661	14.008841
12 h after light	13.4143995	12.93665	13.892149
4 h after dark	11.8875575	11.299537	12.475578
8 h after dark	12.3193315	11.581808	13.056855
12 h after dark	13.337095	13.337095	13.337095