condition	mean	min	max
4 h after light	12.9104	11.5791	14.2417
8 h after light	15.38765	15.1712	15.6041
12 h after light	16.50725	15.1551	17.8594
4 h after dark	19.821350000000002	18.0987	21.544
8 h after dark	17.539499999999997	17.0188	18.0602
12 h after dark	17.087200000000003	16.9647	17.2097