condition	mean	min	max
4 h after light	7.564636666666667	7.35525	7.78131
8 h after light	7.6254599999999995	7.46615	7.88704
12 h after light	7.636633333333333	7.47398	7.8616
4 h after dark	7.5931733333333336	7.42353	7.74823
8 h after dark	7.58575	7.455010000000001	7.69376
12 h after dark	7.67962	7.504739999999999	7.929310000000001