condition	mean	min	max
4 h after light	14.23545	12.5099	15.961
8 h after light	13.357	13.2268	13.4872
12 h after light	17.40715	16.0072	18.8071
4 h after dark	22.608133333333335	19.581	24.7907
8 h after dark	26.224466666666665	25.5922	27.0043
12 h after dark	19.8918	17.715	22.2953