Relative standard deviation
Identifier |
Rel_Std_Dev_RT_Calibs |
Scope |
Peak or group |
Type |
Double |
Description |
Relative standard deviation of retention times of all calibration standards (only shown in the results for calibration standards (sample type = 1); calculated for all injections of type SampleType.Calibration). |
Formula |
if(Sample_Type = 1, RelStdDev("Peak_RetentionTime", AllMatchingPeaksAndGroups(MatchOption.Compound, CurrentSequence.AllInjectionsOfType(SampleType.Calibration))),"") |
This returns the standard deviation of compounds with the same name in all injection of type calibration. If you have several compounds with the same name on different signals, all of them will be considered when you calculate this standard deviation. |
If you need to calculate the standard deviation of a peak only on a specific signal in all standard injections, use MatchOption.CompoundOnSignal:
if(Sample_Type = 1, RelStdDev("Peak_RetentionTime", AllMatchingPeaksAndGroups(MatchOption.CompoundOnSignal, CurrentSequence.AllInjectionsOfType(SampleType.Calibration))),"")
