For the F deme, the population size remained at 3286 until 8807.9173 generations ago, at which point a exponential change took place until 911.308 generations for size 7824. Afterward, the population saw an exponential growth to 8287 by 665.1. From 665.1 generations ago to today, there's been a exponential change from 8287 to 7241.
time_units: generations
demes:
  - name: F
    start_time: .inf
    epochs:
      - start_size: 3286
        end_time: 8807.9173
      - start_size: 3286
        end_size: 7824
        end_time: 911.308
        size_function: exponential
      - start_size: 7824
        end_time: 665.1
        end_size: 8287
        size_function: exponential
      - end_time: 0
        start_size: 8287
        end_size: 7241
        size_function: exponential