condition	mean	min	max
4 h after light	9.62544	9.46068	9.73397
8 h after light	9.582946666666667	9.57141	9.59698
12 h after light	9.72537	9.615110000000001	9.80603
4 h after dark	9.52735	9.47613	9.580160000000001
8 h after dark	9.337473333333334	9.07911	9.623460000000001
12 h after dark	9.06519	8.95766	9.20314