condition	mean	min	max
4 h after light	8.948456666666667	8.75415	9.06444
8 h after light	8.96414	8.820689999999999	9.22073
12 h after light	8.81973	8.71172	8.97348
4 h after dark	8.599516666666668	8.47466	8.805480000000001
8 h after dark	8.439373333333334	8.145539999999999	8.796510000000001
12 h after dark	8.47392	8.32676	8.70459