condition	mean	min	max
4 h after light	8.35333	7.32568	9.38098
8 h after light	6.185975	5.91985	6.4521
12 h after light	6.29748	5.89424	6.70072
4 h after dark	8.060323333333333	7.81972	8.47385
8 h after dark	8.467273333333333	7.69352	9.12764
12 h after dark	7.6572	7.05627	8.0578