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Table 2

Averaged horizontal velocities for region B inside the Hα contour of the filament’s spine separated in the velocities predominantly to the left (blue) and right (red) for all four wavelengths.

λ Direction vmax σv No. of
[Å] [km s−1] [km s−1] [km s−1] pixels
304 red 1.45 0.50 0.26 1268
blue 2.29 0.70 0.37 3035
171 red 1.60 0.67 0.31 1686
blue 2.51 0.71 0.40 2617
193 red 1.83 0.59 0.32 1950
blue 1.47 0.56 0.28 2353
211 red 1.58 0.48 0.26 2087
blue 1.42 0.47 0.24 2216

Notes. We present the maximum horizontal velocities vmax , the mean horizontal velocities , and the corresponding standard deviation σv .

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