condition	mean	min	max
4 h after light	1.4349645	0.903029	1.9669
8 h after light	5.916655	5.85533	5.97798
12 h after light	16.14865	15.6685	16.6288
4 h after dark	13.87735	13.0295	14.7252
8 h after dark	12.80025	12.0356	13.5649
12 h after dark	5.892435	5.37566	6.40921