condition	mean	min	max
4 h after light	8.43882	6.49337	10.6939
8 h after light	11.38322	3.67996	16.7578
12 h after light	13.37918	8.28404	18.488
4 h after dark	17.287166666666664	13.5575	20.4336
8 h after dark	12.193313333333334	7.96344	15.8702
12 h after dark	14.899833333333333	12.409	17.2574