condition	mean	min	max
4 h after light	18.683	12.0196	26.4979
8 h after light	9.81141	1.89325	18.6544
12 h after light	9.920996666666667	5.89661	15.89
4 h after dark	13.406133333333333	10.2637	16.1474
8 h after dark	16.8273	12.8735	19.7157
12 h after dark	15.8652	14.4792	18.182