condition	mean	min	max
4 h after light	8.55372	8.34096	8.68467
8 h after light	8.534903333333334	8.52538	8.55131
12 h after light	8.744776666666667	8.601469999999999	8.944519999999999
4 h after dark	8.435979999999999	8.383339999999999	8.52051
8 h after dark	8.484316666666667	8.41925	8.51849
12 h after dark	8.50991	8.481639999999999	8.55677