condition	mean	min	max
4 h after light	11.81435	10.873	12.7557
8 h after light	8.65433	8.52765	8.78101
12 h after light	7.35718	7.05651	7.65785
4 h after dark	12.93895	11.817	14.0609
8 h after dark	12.8616	12.6599	13.0633
12 h after dark	15.52785	15.2106	15.8451