condition	mean	min	max
4 h after light	8.38315	8.13995	8.5234
8 h after light	8.429393333333334	8.13017	8.58999
12 h after light	8.490853333333334	8.24573	8.70632
4 h after dark	8.478470000000002	8.14825	8.6446
8 h after dark	8.33569	8.1247	8.52213
12 h after dark	8.256426666666666	8.15485	8.34576