The population of deme T held at 9722 until 4534.5011 generations back, when it changed reaching 1793, which has been constant since then.
time_units: generations
demes:
  - name: T
    start_time: .inf
    epochs:
      - start_size: 9722
        end_time: 4534.5011
      - start_size: 1793
        end_time: 0