condition	mean	min	max
4 h after light	8.75174	8.717989999999999	8.81808
8 h after light	8.44813	8.31732	8.53784
12 h after light	8.51061	8.38114	8.58628
4 h after dark	8.509066666666667	8.24193	8.6812
8 h after dark	8.927473333333333	8.64223	9.08895
12 h after dark	9.253686666666667	9.07362	9.37292