condition	mean	min	max
4 h after light	13.0249	12.1888	13.861
8 h after light	8.612855	8.55233	8.67338
12 h after light	8.09134	7.89816	8.28452
4 h after dark	8.070513333333334	7.72156	8.36808
8 h after dark	11.4809	11.3193	11.617
12 h after dark	11.635866666666667	11.2571	11.9149