condition	mean	min	max
4 h after light	17.949383	15.459984	20.438782
8 h after light	14.031219499999999	13.904511	14.157928
12 h after light	14.157928	14.157928	14.157928
4 h after dark	14.5135115	14.157928	14.869095
8 h after dark	12.942534	11.48507	14.399998
12 h after dark	13.291517	13.291517	13.291517