condition	mean	min	max
4 h after light	18.830697	12.378653	25.282741
8 h after light	17.511738	17.059668	17.963808
12 h after light	13.5331565	13.291517	13.774796
4 h after dark	15.56358	15.499822	15.627338
8 h after dark	14.984206	14.984206	14.984206
12 h after dark	12.375502	12.375502	12.375502