condition	mean	min	max
4 h after light	18.8909905	18.797852	18.984129
8 h after light	18.799126	18.090477	19.507775
12 h after light	17.405319	17.165725	17.644913
4 h after dark	17.9643175	17.899623	18.029012
8 h after dark	20.463171	19.966779	20.959563
12 h after dark	17.344114	17.344114	17.344114