condition	mean	min	max
4 h after light	17.4802095	16.959676	18.000743
8 h after light	20.428685	16.343401	24.513969
12 h after light	15.750424	14.557309	16.943539
4 h after dark	15.648944499999999	14.931841	16.366048
8 h after dark	14.5656515	14.514569	14.616734
12 h after dark	17.76637	17.76637	17.76637