438 
Histogram 2 
Histogram and normal distribution curve of 104 incli 
nation residuals between the horizon camera values 
and the autograph A8-values afterthe adjustment. 
C h I qc - 1 64 
, 5,56 
chi 5 2 = 12,59 
Normal distribution hypothesis accepted on the 5 % level. 
A8 for determining the accuracy. A detailed investigation of the 
accuracy of the double point resection was performed for the refe 
rence values from the autograph A8. The root mean square value 
of all the differences (excluding the errors of A8-values) was found