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Table 2

Details on the two reference apertures used in our photometry.

Spot BLC TRC
RA Dec RA Dec
19:59:xx.xxx +40:44:xx.xxx 19:59:xx.xxx +40:44:xx.xxx

LHS1 22.840 24.253 22.856 26.590
LHS2 23.018 19.693 23.033 20.960

Notes. Both apertures were rectangular, and for each aperture we provide RA and Dec coordinates of the bottom-left (BLC) and top-right (TRC) corners, respectively. To define the apertures, the 8 GHz image was rotated clockwise by an angle of 38 degrees.

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