Question: Plotting the solution of a PDE (pdsolve-numeric)

Hello everybody!
I have a PDE with initial and boundary conditions. I want to plot its solution by taking "t" as x axis. I have seen the documentation. It only has the space variable on x axis. Please show me a way to achieve what I intend.

here is the file

The value of x can be chosen as 0.16 or 0.21

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