Until a shift occurred 8877.3035 generations ago, deme E's population was consistently 9247. Since then, it changed to 4717, a number that has remained unchanged to the current time.
time_units: generations
demes:
  - name: E
    start_time: .inf
    epochs:
      - start_size: 9247
        end_time: 8877.3035
      - start_size: 4717
        end_time: 0