cv_total = new DblMatrix(0.0);
v_total = new DblMatrix(new Double(this.parent.getInitialVolume(ssid)));
data.addColumn("pH"+ssid,Double.class);
data.addColumn("CV"+ssid,Double.class);
plot.addResponseVariable("CV"+ssid);
plot.addPredictorVariable("pH"+ssid);
Vector observations = this.parent.getTitrationObservationNumbers(ssid);
for (int obs=0;obs<observations.size();obs++)
{