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How much accuracy do we actually gain ??
1SD
systematic [mm]
lat lng vrt
_________________________________________________________________________________________________________________
1st fraction
3.7 3.3 3.4
tolerance of 5 mm
no imaging
3.7 3.3 3.5
no tolerance
with eNAL
1.5 1.6 1.6
3 mm tolerance
with eNAL
1.1 1.0 1.0
2mm
Comparing no images at all to one image on first day: no reduction
of the systematic uncertainty
Unpublished data, courtesy of M Josipovic