MuBu analysis and export to text file ?

Hi there, I’m using MuBu for analyzing some sound descriptors offline.
It works quite fine.

For instance, usig PiPo psy processing, I got 4 graphs:
frequency, energy, ac1 and voiced.

First question: how can I export only one graphs as text file ?

Second question, how can I find the time stamp ?
I mean: there is a sampling rate “somewhere”. What is the time between two values in my graphs ?

Any help would be very appreciated.

Julien