95 
4.1.2. Columns 6, 7 and 8 indicate the square average of the residual 
deviations of the control points after adjustment (d: ^ [ddfj iph e ir ma g n itude i 
is an 
indication for the accuracy of the transformation of the individual strips on the 
control points along the strips. 
4.1.3. Columns 10,11,12 show the mean square error of the determination 
of individual points calculated from the coordinate differences of all points which have 
been measured in two strips vs . This mean error characterizes the in 
trinsic accuracy in the block. ^ n 
4.1.4. The two strips No. 4 and 5 (specially marked in table II, IV and V) 
indicate errors which are far beyond the normal, and are partly 4 times larger than 
for the other 9 strips. When repeating the machine-aerotriangulation of these two 
strips on a different plotting instrument residual errors of normal magnitude resulted 
(please cf. table II strips No. 4' and 5'). A later examination showed that the 
operator of these two strips No. 4 and 5 did not set the diapodtives into the picture 
carriers correctly. Thus the longitudinal tilt in the orientation process was strongly 
influenced. 
The Official Report of the President and the graphic representations do not 
contain the results of the repeated strips 4' and 5' since the repetition of the machine 
aerotriangulation of these two strips could not been finished at the officially fixed 
closing date for this part of the research work. 
4.2. Error calculation. 
The coordinate differences of check points (coordinates obtained from aero 
triangulation minus geodetic coordinates) have been calculated in Milan. 
4.2.1. A total of 29 points was eliminated from the complete number 
of check points as being extremely faulty. These were 
14 points because of faulty geodetic coordinates (according to information from the 
President, Circular No. 7). 
4 points because of calculating and typing errors. 
11 points because of identification errors (according to identification sketches and 
measuring protocols). 
TABLE III — EXTREMELY FAULTY POINTS WHICH HAVE NOT BEEN CONSIDERED 
Faulty geodetic coordinates 
(information according 
to Circular No. 7) 
Calculating and 
typing errors 
Identification 
.errors 
Point No. 11 
36 
3 
12 
56 
10 
26 
222 
24 
83 
235 
34 
99 
54 
174 
91 
199 
147 
209 
158 
236 
211 
249 
246 
270 
252 
282 
294 
300