condition	mean	min	max
4 h after light	6.01345	5.41315	6.61375
8 h after light	6.9435199999999995	6.37915	7.50789
12 h after light	6.137615	5.55832	6.71691
4 h after dark	6.1063849999999995	5.83557	6.3772
8 h after dark	4.5200499999999995	4.48394	4.55616
12 h after dark	6.0082699999999996	5.76104	6.2555