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Portable Network Graphic  |  2003-02-25  |  15.5 KB  |  188x231  |  8-bit (77 colors)
   ocr: Full-disk dopplergram obtained with MDI on9 July 1996. The large left-right variafion is the sig- nal from solar rotation. The texture is combination of the motion from the sound woves thaf permeate the Sun and the large convective cells called super-granulation'. The bright feature in the lower right quad- rant is an active region.