How do I get the time and the corresponding value out of a Timeseries?

I calculated the Energy. Its a function over time. Now, I want to know the time at one point or by crossing a value. How can I do it? The function is bijective. And when I save to the workspace it is a time series.

[Azzi Abdelmalek]

show us a sample of your data. Is it a Matrix? its size?

[Dominik Leifer]

Thanks, I got it. I saved my Data as Datavector F to workspace and created a Timevector t. Then I used the find() function in matlab. e.g.

 idx = find(F==10,1) % find first value in F with the value of 10

 t_10 = t(idx) % time when 10 is found