What the numbers mean

These are records of my one rep max's. I rate them on a five point scale. 5 means I completed the lift with perfect form. 4 is a completed lift with noticeable shakiness. 3 is completing the lift 3/4 of the way up. 2 is half way up. 1 is a couple inches up. 0 is no noticeable separation between the weight and whatever the weight was resting on.