The number of individuals in deme H remained at 4606 until 778.0 generations ago, at which time it decreased to a new stable size of 4178.
time_units: generations
demes:
  - name: H
    start_time: .inf
    epochs:
      - start_size: 4606
        end_time: 778.0
      - start_size: 4178
        end_time: 0