condition	mean	min	max
4 h after light	9.396476666666667	9.383230000000001	9.40889
8 h after light	8.237733333333333	8.06071	8.39818
12 h after light	8.610043333333332	8.452689999999999	8.74645
4 h after dark	8.85716	8.78445	8.90996
8 h after dark	9.34074	9.239519999999999	9.47942
12 h after dark	9.68339	9.63379	9.72526