I used the following code which worked, but I had to erase the headers in the original .txt file in order for this to work.
por_layer5 = pd.read_csv("Sample_File.txt",comment='#', header=None, delim_whitespace=True)
I wanted to know if there is a way to read in the .txt file and set conditions that only read in the integers and separate them into three columns without having to edit the original .txt file. I provided a preview of the first lines from the file that include the headers. My original thought was to index into the file to read-only when the numbers start (its index number is 4), but I've had trouble doing so.