condition	mean	min	max
4 h after light	20.1817	19.4885	20.8749
8 h after light	14.85825	14.6403	15.0762
12 h after light	16.1813	14.8547	17.5079
4 h after dark	14.763333333333334	12.9876	16.9222
8 h after dark	26.1987	24.3141	28.0041
12 h after dark	19.699	18.6016	20.3265