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Gauss of the spots

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A color table for SDO's colored magnetogram imagery is here,

Obviously it is rough estimating that way and valued can go above or below 1500G/-1500G. Values can probably be obtained from science fits files, but a spot would pretty much need to be directly facing us to get a good value as we won't get a correct reading when they are viewed further at an angle.

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If you are looking for the polarity, SDO has an archive of imagery. https://sdo.gsfc.nasa.gov/assets/img/browse/

HMIB is black and white magnetogram imagery and HMIBC is colored with with the previous link's color table.

The intensitygram imagery, HMIIC, HMIIF, HMII, would be what is similar to your sketch. We can't see the magnetic strength from those.

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