condition	mean	min	max
4 h after light	8.483383333333334	8.04981	8.7354
8 h after light	8.565013333333333	8.35185	8.8174
12 h after light	8.66021	8.59056	8.77487
4 h after dark	8.664153333333333	8.35113	8.8569
8 h after dark	8.63177	8.25275	8.82884
12 h after dark	8.88426	8.74116	9.04497