condition	mean	min	max
4 h after light	9.014633333333332	8.8708	9.20657
8 h after light	9.03082	8.95374	9.14937
12 h after light	8.89146	8.8285	9.00566
4 h after dark	8.847016666666667	8.78571	8.92126
8 h after dark	8.89824	8.78824	8.96849
12 h after dark	8.798383333333334	8.67602	8.96298