node  mean  sd  MC error 2.5%  median  97.5% start sample
  pi  0.7099  0.4538  0.004576  0.0 1.0 1.0 1001  10000

   node  mean  sd  MC error 2.5%  median  97.5% start sample
  p 0.7718  0.4197  0.004106  0.0 1.0 1.0 1001  10000