For the H deme, the population size remained at 8365 until 8406.021 generations ago, at which point a linear decrease took place until 3600.4 generations for size 6950. Afterward, the population saw an exponential reduction to 2758 by 3168.0. From 3168.0 generations ago to today, there's been a exponential change from 2758 to 8906.
time_units: generations
demes:
  - name: H
    start_time: .inf
    epochs:
      - start_size: 8365
        end_time: 8406.021
      - start_size: 8365
        end_size: 6950
        end_time: 3600.4
        size_function: linear
      - start_size: 6950
        end_time: 3168.0
        end_size: 2758
        size_function: exponential
      - end_time: 0
        start_size: 2758
        end_size: 8906
        size_function: exponential