condition	mean	min	max
4 h after light	4.207633333333333	4.16541	4.25601
8 h after light	4.15557	4.09286	4.22472
12 h after light	4.206863333333334	4.13667	4.24509
4 h after dark	4.222326666666667	4.18325	4.25601
8 h after dark	4.24319	4.16303	4.33849
12 h after dark	4.25845	4.14735	4.40914