docs: def __write_data(self, idx):
          """
          Write out the measurement tables found in paleoData and chronData
          :return:
          """
          pair = self.noaa_data_sorted["Data"][idx]
          # Run once for each pair (paleo+chron) of tables that was gathered earlier.
          # for idx, pair in enumerate(self.noaa_data_sorted["Data"]):
          lst_pc = ["chron", "paleo"]
          # loop once for paleo, once for chron
          for pc in lst_pc:
              # safeguard in case the table is an empty set.
              table = pair[pc]
              if pc == "paleo":
                  self.__write_variables_1(table)
                  self.__write_divider()
                  self.__write_columns(pc, table)
              elif pc == "chron":
                  # self.__write_variables_1(table)
                  self.__write_columns(pc, table)
                  self.__write_divider(nl=False)
          return