prior variance=0.01
  realization=[25.2184,2]
  w=0.0243309
  expected posterior ~N(25.1488, 0.098776)
  obtained posterior ~N(25.2096, 0.1176)
  acceptance rate=[0.0946844,0]
prior variance=1
  realization=[29.8912,2]
  w=0.666667
  expected posterior ~N(29.0771, 0.57735)
  obtained posterior ~N(29.4172, 0.4689)
  acceptance rate=[0.420266,0]
