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Table 1

Root mean squares of departures between measured velocities in km s-1 obtained with cubic and Gaussian interpolations for strips of different distances from the solar limb.

15′′ 25′′ 35′′ 45′′

rms[V(x,y,t)−VGauss(x,y,t)] 0.48 0.37 0.23 0.27

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