condition	mean	min	max
4 h after light	9.374306666666667	9.11144	9.513530000000001
8 h after light	9.42234	9.15902	9.566930000000001
12 h after light	9.513969999999999	9.284839999999999	9.678189999999999
4 h after dark	9.4268	8.997489999999999	9.74189
8 h after dark	9.506833333333335	9.12199	9.74895
12 h after dark	9.311973333333333	9.02618	9.45542