condition	mean	min	max
4 h after light	8.3093345	7.648144	8.970525
8 h after light	8.8135875	8.459472	9.167703
12 h after light	8.2655125	8.20835	8.322675
4 h after dark	8.6022975	8.48764	8.716955
8 h after dark	8.761070499999999	8.234214	9.287927
12 h after dark	8.491532	8.491532	8.491532