Hello,

I'd like to put columns into a transition report with the first and last raw time. I go to Settings/Document Settings and try to Define Annotation. Select Calculated, and for Applies to set Transitions, then set Precursor/Peptide/Transitions/Transition Results/Chromatogram/Raw Data/Raw Times. For Aggregate Operation, select Min. Now I go to a report, find this new annotation "Min Raw Time" and add to the report. It has all the Raw Times in each cell, in their comma delimited form, but I wanted to find just the minimum. If I go back to try to Edit this modification, the Aggregate operation has always switched to Count. Am I misconstruing how this operation should work? Perhaps the list of Raw times is an unparsed string and Skyline doesn't know what the minimum value would be?

Thanks
Philip