80 
will become distributed along the strip proportionally to the x-coordi- 
nates of the strip. The correction to the error (325) will consequently 
become 
p i=n : i=n 
CH, = — = b 2 (n — à + 1) dg; + X dbz, 
i24 i=1 
The residual elevation error in the model p — 1,p will consequently 
become 
iD i=p pí[ i=n 
i=1 i=1 n i1 
i=n 
+ X dbz; (326) 
i—1 
After some rearrangement we find 
b (n — p)i=p bp i-^ 
Bg = ——m—- 3 (à — 1) dq ; > (mn--1 + 1) dg; + 
H i 7 I ri 7 
p n i=1 n i=p+1 
n — p i=p p i=n 
a. D o dii (327) 
n i=1 N i=p+1 
The weight number is 
  
D (n — py i ep AD i I" ; 
QryRy nn = Q, q = (2 =] y "it n? Qo ; (n -—2 r5 1)* "l^ 
(n — p? p p? (n — p) 2 b(n — py i-2 | 
+. 22. Qu. + 2 Qua mm. 2 Qoo: 2 (2 TM 1) rn 
n n n i2] 
2 bp? in 
, i=p+1 
After development and substitution of the weight- and correlation 
numbers (176), (177) and (180) we find 
p (n — p) h 
QnyR, RES 6 nd? f2 p (n p) d 1} (329) 
Next we treat the two last terms of (285) in the same way.