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Table 2.
Longitudinal shifts (in km) of the images observed at the center of the solar disk at different line cords for three sequences of observations with the spectrograph slit oriented along the west-east axis.
| Line cord | 2022/07/19 | 2022/07/20 | 2022/07/22 | Weighted average Δx (km) |
|---|---|---|---|---|
| 20 | −5.0 ± 0.6 | −5.0 ± 8.8 | −5.5 ± 7.5 | −5.0 ± 0.6 |
| 18 | −9.0 ± 0.7 | −11.7 ± 0.7 | −10.2 ± 0.7 | −10.3 ± 0.4 |
| 16 | −14.6 ± 1.3 | −20.0 ± 1.2 | −16.2 ± 1.1 | −18.7 ± 0.7 |
| 15 | −20 ± 11.8 | −25.5 ± 9.7 | −22.3 ± 1.3 | −22.3 ± 1.3 |
| 14 | −24.9 ± 2.4 | −33.4 ± 9.9 | −28.2 ± 1.9 | −27.1 ± 1.6 |
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