condition	mean	min	max
4 h after light	7.457776666666667	7.362080000000001	7.6010100000000005
8 h after light	7.59879	7.48353	7.73539
12 h after light	7.6542	7.58351	7.76555
4 h after dark	7.789163333333333	7.580889999999999	7.96635
8 h after dark	7.57107	7.533239999999999	7.606789999999999
12 h after dark	7.451836666666667	7.402	7.48031