condition	mean	min	max
0 h after light	18.7255	15.8528	21.5982
4 h after light	0.969165	0.0	1.93833
8 h after light	0.0	0.0	0.0
4 h after dark	4.368055	4.35944	4.37667
8 h after dark	10.65895	10.0765	11.2414
12 h after dark	11.618705	8.67251	14.5649