condition	mean	min	max
4 h after light	6.85712	6.77887	6.93537
8 h after light	11.8284	11.6051	12.0517
12 h after light	19.3403	16.8641	21.8165
4 h after dark	11.64723	9.89596	13.3985
8 h after dark	14.00485	13.8272	14.1825
12 h after dark	10.63155	10.6082	10.6549