Originally, deme F had a population size of 2528, which increased to 5098 around 9359.7709 generations ago and has not changed since.
time_units: generations
demes:
  - name: F
    start_time: .inf
    epochs:
      - start_size: 2528
        end_time: 9359.7709
      - start_size: 5098
        end_time: 0