condition	mean	min	max
4 h after light	8.262789	8.202903	8.322675
8 h after light	7.071952	6.781873	7.362031
12 h after light	7.8937100000000004	7.627235	8.160185
4 h after dark	7.756261	7.116162	8.39636
8 h after dark	7.109502	6.879828	7.339176
12 h after dark	7.374922	7.374922	7.374922