If you knew the specific ages of each unit, these would appear along the left-hand side of the column. Examples of typical stratigraphic columns are attached to this lab. Neatness is important when presenting geologic maps, cross sections and columns. Careful drafting with fine lines and accurate measurements is crucial. This is not just compulsiveness, a sloppy map or column cannot be accurate and therefore cannot be correct.
Neat work is always closer to the truth than poorly drafted work.