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Table A.2.

Swift log of observations.

UT date MJD start Exptime Filter (‡) Mag Flux
(s) (Vega) ×10−14 erg s−1 cm−2 Å−1
2019-04-21 58594.98145 161.4 UVM2 12.47 ± 0.04 4.77 ± 0.12
2019-04-22 58595.31350 151.9 UVW1 12.47 ± 0.04 4.09 ± 0.16
2019-04-22 58595.32361 60.3 UVW2 12.19 ± 0.04 7.10 ± 0.24
2019-06-19 58653.41332 403.7 U 12.46 ± 0.03 3.66 ± 0.10
2019-06-19 58653.41834 32.3 UVW1 12.39 ± 0.04 4.41 ± 0.20
2019-06-19 58653.42264 24.9 UVW2 12.25 ± 0.05 6.71 ± 0.27
2019-06-19 58653.42319 32.3 UVW1 12.42 ± 0.04 4.28 ± 0.18
2019-06-19 58653.42749 25.3 UVW2 12.22 ± 0.05 6.92 ± 0.27
2019-06-19 58653.88337 37.2 UVW1 12.32 ± 0.04 4.68 ± 0.18
2019-06-19 58653.88778 37.2 UVW1 12.38 ± 0.04 4.45 ± 0.19
2019-06-19 58653.89272 29.1 UVW2 12.21 ± 0.05 6.98 ± 0.27

Notes. (‡)Filters nominal wavelength and width. U: 3501, 785 Å, UVW1: 2591, 693 Å, UVM2: 2229, 498 Å, UVW2: 2033, 653 Å.

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