docs: def get_chron_data(temp_sheet, row, total_vars):
      """
      Capture all data in for a specific chron data row (for csv output)
      :param obj temp_sheet:
      :param int row:
      :param int total_vars:
      :return list: data_row
      """
      data_row = []
      missing_val_list = ['none', 'na', '', '-']
      for i in range(0, total_vars):
          cell = temp_sheet.cell_value(row, i)
          if isinstance(cell, str):
              cell = cell.lower()
          if cell in missing_val_list:
              cell = 'nan'
          data_row.append(cell)
      return data_row