The population of deme G held at 5466 until 5850.61 generations back, when it changed reaching 7102, which has been constant since then.
time_units: generations
demes:
  - name: G
    start_time: .inf
    epochs:
      - start_size: 5466
        end_time: 5850.61
      - start_size: 7102
        end_time: 0