condition	mean	min	max
4 h after light	7.5456795	7.539931	7.551428
8 h after light	7.54378	7.244837	7.842723
12 h after light	7.3826345	7.238163	7.527106
4 h after dark	8.080446	7.508517	8.652375
8 h after dark	8.0321665	7.767458	8.296875
12 h after dark	7.671887	7.671887	7.671887