condition	mean	min	max
4 h after light	9.35573	9.07708	9.54758
8 h after light	9.412183333333333	8.96075	9.74364
12 h after light	9.543959999999998	9.360389999999999	9.71952
4 h after dark	9.21122	8.820910000000001	9.46058
8 h after dark	9.11646	8.65338	9.42383
12 h after dark	9.212343333333333	8.98959	9.403030000000001