condition	mean	min	max
4 h after light	8.24865	8.19075	8.34811
8 h after light	8.278739999999999	8.25661	8.30912
12 h after light	8.368226666666667	8.289539999999999	8.52098
4 h after dark	8.320076666666667	8.22076	8.391210000000001
8 h after dark	8.306203333333332	8.19492	8.40575
12 h after dark	8.708806666666668	8.55264	8.86392