TABLE 2.4.2 Residuals on tie points coordinates, resulting from 
the application of least squares adjustment. 
UPPER STRIP DOWN STRIP 
POINT X (mm) Y (mm) Z (mm) x (mm)  y(mm) z (mm) 
131% 0.258 0. 253 0.237 0.259 -0.254 -0.236 
132 -0.145 -0.139  -0.212 0.146 0.139 0.211 
125 -0.168 -0.089 -0.070 0.168 0.090 0.069 
133 -0.122 -0.121 -0.067 0.112 0.122 0.066 
134 -0. 027 -0.037 0.014 0.027 0.037  -0.015 
142 0.098 0.028  -0.039 -0.098  -0.029 0.040 
135 0.061 0.058 0.100 -0.061 -0.059 -0.100 
170 0.035 0.046 0.036 -0.035 -0.046 -0.036 
TABLE 2.4.3 Residuals on the points coordinates, resulting from 
the application of robust estimation. 
DOWN STRIP UPPER STRIP 
POINT x (mm) y (mm) z (mm) X(mm)  Y(mm) Z(mm) 
131* 1. 007 1.015 1.029 0.000 0.000 0.000 
132 -0.002 -0.001 -0.007 0.002 0.001 - 0.005 
125 0.003 -0.001 0. 003 -0.003 0.001 -0.003 
133 -0.002 0.000 0. 004 0.002 0.000 -0.004 
134 0.003 -0.001  -0.003 -0.003 0.000 -0.003 
142 -0.002 0.000 0.005 0.002 0.000 -0.005 
135 0. 000 -0.004 0.001 0.000 0.004 -0.001 
170 0.000 0.007 0.005 0.000 -0.007 0.005 
* Point in wich blunders were introduced 
2.5 Revision of coding (S5) 
This step provides a general check of numbering and coding of 
points, to detect, on the whole block, the use of the same number 
for distinct points or distinct numbers for the same point or other 
inadequate coding. 
2.6 Control treatment (S6) 
The set of previous steps estabilishes a progressive filtering of 
photogrammetric data that practically insure the absence, in the 
data, of photogrammetric blunders. The gross errors in ground 
control remains, then as the major source of gross errors. To deal 
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