2 
Table 8. 14. Percentage points of the Empirical Photogrammetric X- Distribution, calculated 
  
  
from radial error in space. 
  
  
  
  
Degrees Probability 
of 
freedom 0.900 0.950 0.975 0,990 0. 
1 0.00 1.31 3.09 11. 22. 
2 1.44 3 17 8.24 24, 37. 
3 2.49 5.44 14.5 32. 53. 
4 3.56 8.25 19.5 38. 65. 
5 4.91 10.3 25.0 54. 86. 
6 6.18 13.9 26.0 58. 99. 
7 7.76 17.0 30.5 70, 99. 
  
  
„98