The number of individuals in deme C remained at 7497 until 5260.8715 generations ago, at which time it changed to a new stable size of 942.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 7497
        end_time: 5260.8715
      - start_size: 942
        end_time: 0