condition	mean	min	max
4 h after light	8.61178	8.49173	8.72251
8 h after light	8.60819	8.595880000000001	8.62107
12 h after light	8.45511	8.42887	8.48812
4 h after dark	8.56302	8.51341	8.607389999999999
8 h after dark	8.60249	8.47362	8.72735
12 h after dark	8.70286	8.638869999999999	8.78138