Finding time trends in each variable

[Darcy Hill]

I am working with panel data of 311 local authorities over 20 quarters. Is there a simple way to find the average of a variable across local authorities at each point in time? I want to observe how each of my variables changes over time?

Thanks!

[Clyde Schechter]

by time, sort: egen mean_x = mean(x)

[Darcy Hill]

Thank you!