condition	mean	min	max
0 h after light	17.99605	17.8587	18.1334
4 h after light	11.607399999999998	10.8257	12.3891
8 h after light	10.074895	9.85449	10.2953
4 h after dark	9.451435	8.72907	10.1738
8 h after dark	13.267199999999999	11.8223	14.7121
12 h after dark	12.94665	12.3753	13.518