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Fig. 3


a) Ratio of 304 Å intensity over 195 Å intensity EIT images, the white box indicates the ROI used in c). b) 195 Å EIT image of the prominence on the limb, white boxes indicate two ROIs at 82.3 Mm and 42.1 Mm above the solar surface. c) The maximum 304/195 Å intensity ratio versus height above the solar surface over Carrington longitude, white diamonds indicate the apparent height of the prominence at each time-step, while the white line is Eq. (1) with h0/R = 0.170 and L0 = 27.5°.

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