The deme of O kept its population at 8788 until 9218.79 generations ago, when a exponential increase ensued until 5397.3071, to size 9530. Subsequently, a exponential change changed the numbers to 6674 individuals by 820.761. Starting from 820.761, the population has seen a change from 6674 to 2413 at a exponential pace, continuing to this day.
time_units: generations
demes:
  - name: O
    start_time: .inf
    epochs:
      - start_size: 8788
        end_time: 9218.79
      - start_size: 8788
        end_size: 9530
        end_time: 5397.3071
        size_function: exponential
      - start_size: 9530
        end_time: 820.761
        end_size: 6674
        size_function: exponential
      - end_time: 0
        start_size: 6674
        end_size: 2413
        size_function: exponential