condition	mean	min	max
4 h after light	8.47499	8.35776	8.65675
8 h after light	7.8360199999999995	7.693789999999999	7.93927
12 h after light	6.9420399999999995	6.59125	7.22733
4 h after dark	6.936766666666666	6.728789999999999	7.0872399999999995
8 h after dark	7.142636666666666	6.8071399999999995	7.42287
12 h after dark	7.908473333333333	7.76584	8.02493