Number chart

If you are wondering whether or not I agonized over starting with 1 or 0, and whether each line should end with 10, 20, 30, or 9, 19, 29, the answer is yes, I did.  If you are wondering how much time I spent in this agonized state, the answer is approximately 2.5 weeks until I finally forced myself to make a decision. 

If you haven't known me for long, you might think I'm kidding.  Sigh.