condition	mean	min	max
4 h after light	8.305346666666667	8.24991	8.359689999999999
8 h after light	8.33848	8.3072	8.39831
12 h after light	8.28857	8.2337	8.32262
4 h after dark	8.613563333333333	8.54118	8.73569
8 h after dark	8.65016	8.54015	8.71607
12 h after dark	9.015836666666667	8.9591	9.09158