Now.
We arrived these distances with these error ranges:
Los Angeles - Atlanta: 3.073kms. +-7%
Los Angeles - Chicago : 2.769kms. +-3%
Atlanta - Chicago: 1.221 kms. +-8%
Dallas- Los Angeles: 2.168kms. +-12%
Dallas- Atlanta: 1369 kms. +-7%
Dallas - Chicago: 1.583kms. +-8%
New York- Los Angeles : 3992 kms +-5%
New York - Atlanta : 1.491 +-5%
New York - Chicago 1.430 kms. +-8%
New York - Dallas 2275 kms. +-5%
We arrived this shape:
Comparing:
Route / calculated distance / error range / distance on the map/ difference of map and calculation range / it is error in or out of the error range
Los Angeles - Atlanta: 3.073kms. +-7% /
3265kms 6% (in)Los Angeles - Chicago : 2.769kms. +-3% /
2777kms 0% (in)Atlanta - Chicago: 1.221 kms. +-8% /
1318kms 8% (in)Dallas- Los Angeles: 2.168kms. +-12% /
2031kms 7% (in)Dallas- Atlanta: 1369 kms. +-7% /
1276kms 7% =7% (in)Dallas - Chicago: 1.583kms. +-8% /
1456kms 8,7% (limit) New York- Los Angeles : 3992 kms +-5% /
4058kms 2% (in)New York - Atlanta : 1.491 +-5% /
1407kms 5,9% (limit)New York - Chicago 1.430 kms. +-8% /
1315kms (%8,7) (limit)New York - Dallas 2275 kms. +-5% /
2390kms 5%=5% (in)These distances may a bit change with new datas. Today it seems good. You can correct that shape by drawing on a plane surface.
I may a bit correct more on them but it is enough for tonight. As we see that, they are perfectly matches on a flat surface. Perfect. Because the earth is already flat.