Deme F had an initial size of 2127 until 1793.4 generations ago. At that time, its population size grew to 7780, and has remained there till current time.
time_units: generations
demes:
  - name: F
    start_time: .inf
    epochs:
      - start_size: 2127
        end_time: 1793.4
      - start_size: 7780
        end_time: 0