Calculating average of a variable through numerous timesteps
 

Hello,
I am trying to calculate the average of variables like velocity in 3 directions for an unsteady flow in the contour plot. I have thousands of timesteps to calculate the average of the required variable. Integration is not suitable since it is not continuous(it is discretized). I was wondering if there was any function that would return me the average or mean of the desired variable when I load all the timesteps in tecplot?