condition	mean	min	max
4 h after light	9.51651	7.67112	11.3619
8 h after light	6.620775	6.24713	6.99442
12 h after light	5.009715	4.95313	5.0663
4 h after dark	6.795635	6.66671	6.92456
8 h after dark	7.19311	6.74761	7.63861
12 h after dark	8.817405	8.57402	9.06079