condition	mean	min	max
0 h after light	16.9658	16.0608	17.8708
4 h after light	9.383765	8.22683	10.5407
8 h after light	5.33788	5.33564	5.34012
4 h after dark	7.769245	7.0061	8.53239
8 h after dark	13.5674	12.5873	14.5475
12 h after dark	15.55415	14.0694	17.0389