condition	mean	min	max
4 h after light	16.3218	14.43	18.2136
8 h after light	15.36085	14.4779	16.2438
12 h after light	15.4974	12.9723	18.0225
4 h after dark	11.2253	10.868	11.5826
8 h after dark	17.96685	16.706	19.2277
12 h after dark	16.83025	12.7118	20.9487