HP Data Explorer 4 Displaying results, Displaying the theoretical isotope distribution

Using the Elemental Targeting Application

Displaying results The results of the calculation are displayed in the Elemental	6
Target tab of the Output window (Figure 6-21).

Figure 6-21 Elemental Targeting Results in the Output Window

Results include:

•Index— Sequential number assigned to each result.

•Formula— Elemental composition you entered.

•m/z— Mass/charge of an observed peak that, compared to the theoretical mass of the formula specified, is within the Mass Tolerance and Resolution you specified.

•Charge— Charge of the observed peak.

•Isotope Match Score— Number between 0.0 and 1.0 that reflects how well the observed peak matches the theoretical formula, based on mass and isotope pattern. A higher number represents a better match.

Displaying the theoretical isotope distribution

•Isotope Match Intensity— Peak area (counts) that overlaps between the observed isotope pattern and the theoretical isotope pattern. A higher number represents a better match.

To display the theoretical isotope distribution for a formula, double-click the line in the Elemental Target tab of the Output window.

The theoretical isotope trace is displayed in the Spectrum window with an ISO trace label and the elemental formula.

Data Explorer™ Software User’s Guide 6-33