condition	mean	min	max
4 h after light	4.159955	4.14378	4.17613
8 h after light	0.0	0.0	0.0
12 h after light	2.74066	0.0	5.48132
4 h after dark	1.805925	0.0	3.61185
8 h after dark	0.0	0.0	0.0
12 h after dark	3.282225	3.00058	3.56387