I have a PlanetScope Ortho Scene Product (3B) which includes an AnalyticMS.tif and AnalyticMS_SR.tif files. Based on what I have read so far, the AnalyticMS_SR.tif file is scaled surface reflectance in Digital Number. How do I convert the DN to surface reflectance value?

I have read that for AnalyticMS.tif, I can convert the DNs into TOA reflectance or radiance by multiplying them with the given reflectance coefficient or radiometric scale factor. Is there something like that for the the Surface Reflectance product?

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