What's the best way to avoid repeating icons on each row, it clutters the layout and takes attention from other important elements.
If they're really the same in each column, just take them out and place them as column titles. This way you can also attach a label to them and not leave the users guessing.
You may only show them on hover. Or you may use greyed out icons and color them on hover. This way, they do not get too much attention.