condition	mean	min	max
4 h after light	9.27303	9.12953	9.354330000000001
8 h after light	9.31295	9.13747	9.457
12 h after light	9.4035	9.344389999999999	9.46379
4 h after dark	9.528863333333334	9.46379	9.63209
8 h after dark	9.548193333333334	9.417760000000001	9.67052
12 h after dark	9.367506666666667	9.14232	9.533339999999999