condition	mean	min	max
4 h after light	16707.986666666668	14644.15333	18030.68
8 h after light	16120.33722	14389.57333	17370.085
12 h after light	15067.127776666666	13672.84667	16624.48333
1.5 h after dark	15486.12111	13969.85	17611.05333
5.5 h after dark	15920.53333	12710.18333	19604.16333
9.5 h after dark	17518.641113333335	14272.34667	20172.26667