Deme R had an initial size of 5467 until 9817.126 generations ago. At that time, its population size changed to 6533, and has remained there till current time.
time_units: generations
demes:
  - name: R
    start_time: .inf
    epochs:
      - start_size: 5467
        end_time: 9817.126
      - start_size: 6533
        end_time: 0