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Table 1

Comparison of the different horizontal velocities of the AIA λ171 Å flow maps for different time intervals Δ T of theLCT algorithm for region A of 315 Mm × 155 Mm (985 × 485 pixels).

Δ T vmax σv
[min] [km s−1] [km s−1] [km s−1]
15 7.73 1.22 0.76
30 6.19 0.85 0.53
60 4.55 0.61 0.38
90 3.27 0.51 0.31
120 3.35 0.45 0.28

Notes. We show the maximum velocities vmax , as well as the mean velocities with the corresponding standard deviation σv .

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