How to get the data for only one branch

Newbie
19

Here is the output;

image

I tried this at first but it don’t give ME any usefull informations, am I missing somthing ?
I tried this to ;

root [15] auto colType = d.GetColumnType("Psd_All_Shift");
root [16] //Print column type
root [17] std::cout << "Column " << colType << " has type " << colType << std::endl;
Column ROOT::VecOps::RVec<UShort_t> has type ROOT::VecOps::RVec<UShort_t>