condition	mean	min	max
4 h after light	8.61361	8.59101	8.65558
8 h after light	8.734336666666668	8.686919999999999	8.823780000000001
12 h after light	8.94731	8.90288	9.03393
4 h after dark	8.696663333333333	8.50833	8.815
8 h after dark	8.667936666666666	8.51323	8.80932
12 h after dark	8.5371	8.48087	8.57037