condition	mean	min	max
4 h after light	8.938243333333332	8.74059	9.04219
8 h after light	8.873923333333334	8.727139999999999	8.99178
12 h after light	9.02435	8.7665	9.266060000000001
4 h after dark	8.89368	8.53707	9.22386
8 h after dark	8.891453333333333	8.76107	8.9879
12 h after dark	8.95976	8.805019999999999	9.04438