condition	mean	min	max
4 h after light	14.971599999999999	14.7755	15.1677
8 h after light	13.311399999999999	13.0118	13.611
12 h after light	15.27735	14.955	15.5997
4 h after dark	18.75365	17.1558	20.3515
8 h after dark	16.4927	16.1117	16.8737
12 h after dark	17.776899999999998	17.4621	18.0917