Output stacks of "Batch Processing-10Band.ipynb" is not the reflectance

[Pepe-oss]

Hi, everyone. I ran all the "Batch Processing-10Band.ipynb" code and imported the final output tif file into qgis, however I found that the images in the output "stacks" folder do not seem to be reflectance, the values in them are in the hundreds. Is it because of my typing error, or is it because of my misunderstanding. Can anyone help me? image.zip