ICOR output

Hello

For ICOR, it has three outputs file, *.tif , _20M.tif ,_10M.tif. My question is ,can i use only this file *.tif in my calculation after resample it to 10 M or i need to use also the other two files if i am interested with bands from Band1 to Band 8 .

Another thing it is mentioned in the ICOR tutorial “*.tif – containing the reflectance of all bands (except B9 and B10) at 60 m spatial resolution”, but the table shows that not all the bands has 60 m resolution.

Last thing , why B1 is not included in the Sen2COR output even i saw in published papers that B1 is included in the Sen2COR output.

Thank you so much.