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too simple off-line protocol:
measure day 1, correct on days 2,3,…
without new measurements, what to do in following fractions?
systematic and random components unknown,
set-up correction on next days = ??
E(1) = 8 mm = s+r(1)
-14 -12 -10
14
-8 -6 -4 -2 0 2 4 6 8 10 12
s=8
(r(1)=0)
r(1)=8
(s=0)
r(1)=4
s=4
s=14
r(1)=-6
At days 2, 3, … correction of s-component improves set-up