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Table A.1

Standard magnitudes of the field stars of HB89 2201+044 in R and B bands.

Star R B

2 13.427 ± 0.004 14.190 ± 0.002
3 14.423 ± 0.007 15.549 ± 0.004
4 15.527 ± 0.022 17.671 ± 0.011
5 13.116 ± 0.004 14.678 ± 0.002
6 14.159 ± 0.014 16.793 ± 0.007
7 15.718 ± 0.020 17.337 ± 0.010

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