Deme M had an initial size of 9269 until 9314.6204 generations ago. At that time, its population size changed to 5903, and has remained there till current time.
time_units: generations
demes:
  - name: M
    start_time: .inf
    epochs:
      - start_size: 9269
        end_time: 9314.6204
      - start_size: 5903
        end_time: 0