#  sh07_dist.txt
#
   0.0  27.0  12.1  17.7  11.0  29.2  22.4
  27.0   0.0  16.8  11.2  29.2  11.0  31.8
  12.1  16.8   0.0   6.0  12.5  17.1  27.9
  17.7  11.2   6.0   0.0  18.0  11.7  30.0
  11.0  29.2  12.5  18.0   0.0  27.0  33.2
  29.2  11.0  17.1  11.7  27.0   0.0  40.2
  22.4  31.8  27.9  30.0  33.2  40.2   0.0