condition	mean	min	max
4 h after light	174.2	174.2	174.2
8 h after light	159.35	147.0	171.7
12 h after light	175.25	161.2	189.3
4 h after dark	199.1	171.5	226.7
8 h after dark	162.2	156.3	168.1
12 h after dark	193.05	184.6	201.5