condition	mean	min	max
4 h after light	9.81389	9.725760000000001	9.92275
8 h after light	9.71874	9.64818	9.846119999999999
12 h after light	9.630403333333334	9.34362	9.90112
4 h after dark	9.668286666666667	9.41291	9.87973
8 h after dark	9.6217	9.45533	9.875639999999999
12 h after dark	9.547386666666666	9.35482	9.734119999999999