condition	mean	min	max
4 h after light	15.8428	14.437	17.2486
8 h after light	10.084645	9.07099	11.0983
12 h after light	7.42045	6.83038	8.01052
4 h after dark	4.566895000000001	4.25914	4.87465
8 h after dark	7.2578499999999995	6.76263	7.75307
12 h after dark	12.21805	12.1876	12.2485