def _add_data_line(self, data, col, value, ts):
if col in self.column_csv_map:<EOL><INDENT>out_csv = self.column_csv_map[col]<EOL><DEDENT>else:<EOL><INDENT>out_csv = self.get_csv(col)   <EOL>data[out_csv] = []<EOL><DEDENT>data[out_csv].append(ts + "<STR_LIT:U+002C>" + value)<EOL>
Append the data point to the dictionary of "data"
:param data: The dictionary containing all data
:param col: The sub-metric name e.g. 'host1_port1.host2_port2.SendQ'
:param value: integer
:param ts: timestamp
:return: None