The last map was broken the day I tried it. I happen to have had already made a screen shot of it before. The irregular lots add up to 157.04. The rest of the acreage is 160+160+160, so the sum is 637.04.
The percentage perforations in 19 is calculated from the length of the perforations in 19 from the well bore based upon the final survey. The net acres is calculated using the title information which Continental will have.