For deme H, the population count was 7328 until a change 2501.0 generations ago, where it changed to 7151, remaining steady thereafter.
time_units: generations
demes:
  - name: H
    start_time: .inf
    epochs:
      - start_size: 7328
        end_time: 2501.0
      - start_size: 7151
        end_time: 0