condition	mean	min	max
4 h after light	9.378676666666667	9.24566	9.510019999999999
8 h after light	9.503730000000001	9.35622	9.618910000000001
12 h after light	9.486953333333332	9.44393	9.561639999999999
4 h after dark	9.440866666666667	9.1961	9.67605
8 h after dark	9.277483333333333	9.030389999999999	9.48226
12 h after dark	9.31983	9.19994	9.38058