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Hello, I have a data file that I want to run loess on for 36 columns, divide the original data by the new data, then dividing columns that end in A and B by those that end in C. However, I have something wrong in my first step and am completely stuck on the third. Could someone help me please? Here's a snippet of the data file: Order Target GC AA_001_A AA_001_B AA_001_C 1 a 0.584507042