public override string ToString()
{
StringBuilder sb = new StringBuilder();
sb.Append(Spectrum.Filename + '\t');
sb.Append(Spectrum.SpectrumNumber.ToString() + '\t');
sb.Append(Spectrum.SpectrumId + '\t');
sb.Append(Spectrum.SpectrumTitle + '\t');
sb.Append(Spectrum.RetentionTimeMinutes.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(Spectrum.PrecursorMZ.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(Spectrum.PrecursorIntensity.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(Spectrum.PrecursorCharge.ToString() + '\t');
sb.Append(Spectrum.PrecursorMass.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(Spectrum.Masses.Length.ToString() + '\t');
sb.Append(Spectrum.TotalIntensity.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(Peptide.ExtendedSequence + '\t');
sb.Append(Peptide.BaseSequence + '\t');
sb.Append(Peptide.Parent.Description + '\t');
sb.Append(Peptide.StartResidueNumber.ToString() + '\t');
sb.Append(Peptide.EndResidueNumber.ToString() + '\t');
sb.Append(Peptide.MissedCleavages.ToString() + '\t');
sb.Append((precursorMassType == MassType.Average ? Peptide.AverageMass : Peptide.MonoisotopicMass).ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(PrecursorMassErrorDa.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(PrecursorMassErrorPpm.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(MatchingProducts.ToString() + '\t');
sb.Append(TotalProducts.ToString() + '\t');
sb.Append(MatchingProductsFraction.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(MatchingIntensity.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(MatchingIntensityFraction.ToString(CultureInfo.InvariantCulture) + '\t');
sb.Append(MorpheusScore.ToString(CultureInfo.InvariantCulture));
return(sb.ToString());
}