public override MassRange GetMzRange(int spectrumNumber)
{
IMSSpectrum spectrum = analysis.MSSpectrumCollection[spectrumNumber];
double firstMass = (double)spectrum.MSSpectrumParameterCollection["Set Target Mass Start"].ParameterValue;
double lastMass = (double)spectrum.MSSpectrumParameterCollection["Set Target Mass End"].ParameterValue;
return new MassRange(firstMass, lastMass);
}