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Table A.1.

Meanings of the several acronyms used in this paper.

Acronym Definition
AC Across scan direction
AL Along scan direction
BP Blue photometer
CCD Charged coupled device
CRNU Column response non uniformity
DR Data release
EDR Early data release
ESA European space agency
FoV Field of view
GOG Gaia Object Generator
LSF Line spread function
PSF Point spread function
RP Red photometer
SPD Spectral photon distribution
SVD Singular value decomposition
TDI Time delay integration

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