Originally, deme P had a population size of 2841, which increased to 6726 around 5744.13 generations ago and has not changed since.
time_units: generations
demes:
  - name: P
    start_time: .inf
    epochs:
      - start_size: 2841
        end_time: 5744.13
      - start_size: 6726
        end_time: 0