condition	mean	min	max
4 h after light	8.620236	7.972831	9.267641
8 h after light	8.292168499999999	8.043144	8.541193
12 h after light	8.380639	8.213882	8.547396
4 h after dark	8.952072000000001	8.73385	9.170294
8 h after dark	9.0136825	8.179029	9.848336
12 h after dark	8.605562	8.605562	8.605562