The number of individuals in deme T remained at 9839 until 9026.3 generations ago, at which time it changed to a new stable size of 5813.
time_units: generations
demes:
  - name: T
    start_time: .inf
    epochs:
      - start_size: 9839
        end_time: 9026.3
      - start_size: 5813
        end_time: 0