condition	mean	min	max
4 h after light	0.0	0.0	0.0
8 h after light	0.0	0.0	0.0
12 h after light	2.87143	0.0	5.74286
4 h after dark	3.811535	3.78418	3.83889
8 h after dark	0.0	0.0	0.0
12 h after dark	3.438835	3.14375	3.73392