condition	mean	min	max
0 h after light	6.774295	6.7419	6.80669
4 h after light	6.65185	6.59521	6.70849
8 h after light	3.13518	2.46633	3.80403
4 h after dark	4.120895	3.98319	4.2586
8 h after dark	6.169665	5.80994	6.52939
12 h after dark	5.905975	5.76291	6.04904