condition	mean	min	max
4 h after light	6.225125	4.32021	8.13004
8 h after light	7.075925	6.78929	7.36256
12 h after light	6.200065	6.0615	6.33863
4 h after dark	9.391465	7.05813	11.7248
8 h after dark	4.368955	3.87402	4.86389
12 h after dark	5.02133	4.06745	5.97521