docs: def __write_data_col_header(self, l, pc):
          """
          Write the variableNames that are the column header in the "Data" section
          :param list l: variableNames
          :return none:
          """
          count = len(l)
          if pc == "chron":
              self.noaa_txt += "# "
          for name in l:
              # last column - spacing not important
              if count == 1:
                  self.noaa_txt += "{}\t".format(name)
              # all [:-1] columns - fixed spacing to preserve alignment
              else:
                  self.noaa_txt += "{:<15}".format(name)
                  count -= 1
  
          self.noaa_txt += '\n'