Individual fermi velocities instead of average fermi velocity

Dear Admin
I tried to compute a list of fermi velocities belong to specific band number. However, I received a list of velocities, could not succeed to match the average velocity from individual velocities I extracted, with the average velocity given by IFERMI code when I write the command line in the terminal

ifermi info --property velocity

To get individual velocities for specific band, I printed the velocities (print(velocities)from 378th line in file). Maybe I took velocity data from wrong portion of the code. Could you please suggest from which portion of code I can get individual velocities not the average velocity for required band number? If you get time, could you please attach the edited .py file in the forum. I really appreciate your kind help and will be waiting your kind reply.

Thanks in advance