public void exportMeasurements(MeasurementsExporter exporter) throws IOException {
  for (  OneMeasurement measurement : data.values()) {
    measurement.exportMeasurements(exporter);
  }
}

public void exportMeasurements ( MeasurementsExporter exporter ) throws IOException { for ( OneMeasurement measurement : data . values ( ) ) { measurement . exportMeasurements ( exporter ) ; } }
export the current measurements to a suitable format .
