condition	mean	min	max
4 h after light	8.24689	8.23351	8.26021
8 h after light	8.192490000000001	8.060210000000001	8.31347
12 h after light	8.271419999999999	8.1991	8.32296
4 h after dark	8.293163333333334	8.22724	8.37498
8 h after dark	8.268876666666667	8.1499	8.465710000000001
12 h after dark	8.355596666666667	8.30247	8.43022