condition	mean	min	max
4 h after light	8.48088	8.310260000000001	8.6463
8 h after light	8.53173	8.39147	8.805489999999999
12 h after light	8.589656666666666	8.39826	8.69842
4 h after dark	8.744253333333333	8.56519	8.92136
8 h after dark	8.740310000000001	8.7018	8.79611
12 h after dark	8.911313333333332	8.80435	8.970289999999999