Until 6901.749 generations ago, the B deme's population was fixed at 6787. From 6901.749 to 1911.65, it underwent a exponential change to 5468 individuals. Then, a exponential change brought the count to 1032 by 949.43. Since then, from 949.43 generations to the current day, the population has increased from 1032 to 7800 at a exponential rate.
time_units: generations
demes:
  - name: B
    start_time: .inf
    epochs:
      - start_size: 6787
        end_time: 6901.749
      - start_size: 6787
        end_size: 5468
        end_time: 1911.65
        size_function: exponential
      - start_size: 5468
        end_time: 949.43
        end_size: 1032
        size_function: exponential
      - end_time: 0
        start_size: 1032
        end_size: 7800
        size_function: exponential