condition	mean	min	max
0 h after light	7.402995	7.26765	7.53834
4 h after light	4.83488	4.47001	5.19975
8 h after light	3.880345	3.30878	4.45191
4 h after dark	4.18312	4.07095	4.29529
8 h after dark	5.829965	5.51082	6.14911
12 h after dark	5.32136	4.46093	6.18179