condition	mean	min	max
4 h after light	1.68286	1.18193	2.18379
8 h after light	1.5042	1.3356	1.6728
12 h after light	1.22834	1.04229	1.41439
4 h after dark	1.41887	1.30493	1.53281
8 h after dark	1.63602	1.60042	1.67162
12 h after dark	1.699405	1.56907	1.82974