C deme's population was steady at 514 before it changed to 7670 1352.0 generations ago, maintaining that number to the present.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 514
        end_time: 1352.0
      - start_size: 7670
        end_time: 0