five 
38) 
39) 
  
  
>xY 
/ 
NE 4 / 
Ft 
091mm 
Diagram 15. Diagram of residual coordinates errors after adjustment in the five 
indicated points. Aviogon. Film negative. 
After the solution of the normal equations for the five usual points 
we find: 
| dx]? d 12 R 2 = Ra? Ra i R 2 
5 4 8 
2 5 (4 2 
  
  
  
— > { 4 [dx] = Rg —À Re 
24 |5 
37