condition	mean	min	max
4 h after light	8.27994	8.19661	8.381110000000001
8 h after light	8.1277	8.01207	8.35647
12 h after light	8.265166666666667	8.11955	8.38777
4 h after dark	8.61663	8.41656	8.872819999999999
8 h after dark	8.42656	8.23157	8.6023
12 h after dark	8.502643333333333	8.225530000000001	8.85431