Reconstructing solar magnetic fields from historical observations - VIII. AIA 1600 Å contrast as a proxy of solar magnetic fields

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Fig. 13.

Bright and moderate pixels in plage region. Green: True positive, bright and moderate; Red: False positive, bright not moderate; Blue: False negative, moderate not bright. Left panel: all bright and moderate pixels. Middle panel: without boundary pixels. Right panel: without boundary pixels and small clusters (A < 10 pxl).

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