anchor.diff:  wordfreq,gij, ,20,-2.159,-2,-2,40, 09/30/2004
   wordfreq,gij, ,25,-2.159,-2,-2,40, 09/30/2004
   wordfreq,gij, ,5,-2.159,-2,-2,40, 09/30/2004
  -wordfreq,gnat, ,10,-2.005,-2,-2,168, 09/30/2004
  -wordfreq,gnat, ,15,-2.005,-2,-2,168, 09/30/2004
  -wordfreq,gnat, ,20,-2.005,-2,-2,168, 09/30/2004
  -wordfreq,gnat, ,25,-2.005,-2,-2,168, 09/30/2004
  -wordfreq,gnat, ,5,-2.005,-2,-2,168, 09/30/2004
  +wordfreq,gnat, ,10,0.255,0.26,2992,168, 09/30/2004
  +wordfreq,gnat, ,15,0.305,0.31,2884,168, 09/30/2004
  +wordfreq,gnat, ,20,0.365,0.37,2956,168, 09/30/2004
  +wordfreq,gnat, ,25,0.415,0.42,3072,168, 09/30/2004
  +wordfreq,gnat, ,5,0.195,0.20,2892,168, 09/30/2004
   wordfreq,gpp, ,10,0.196,0.20,1044,84, 09/30/2004
   wordfreq,gpp, ,15,0.276,0.28,980,84, 09/30/2004
   wordfreq,gpp, ,20,0.356,0.36,980,84, 09/30/2004
  
positive.code: fannkuch,python, ,7,0.033,0.06,2192,37, 09/30/2004
  fannkuch,python, ,8,0.263,0.29,3712,37, 09/30/2004
  fannkuch,python, ,9,2.533,2.56,20572,37, 09/30/2004
  fannkuch,ruby, ,7,0.419,0.43,2016,25, 09/30/2004
  fannkuch,ruby, ,8,3.859,3.87,2088,25, 09/30/2004
  fannkuch,ruby, ,9,38.549,38.56,2152,25, 09/30/2004
  
negative.code: knucleotide,dlang, ,10000,0.31,0.31,4072,60, 09/30/2004
  knucleotide,dlang, ,20000,0.55,0.55,7580,60, 09/30/2004
  knucleotide,dlang, ,30000,0.79,0.79,7920,60, 09/30/2004
  knucleotide,java, ,10000,-2.166,-2,-2,71, 09/30/2004
  knucleotide,java, ,20000,-2.166,-2,-2,71, 09/30/2004
  knucleotide,java, ,30000,-2.166,-2,-2,71, 09/30/2004
  knucleotide,lua, ,10000,-2.004,-2,-2,62, 09/30/2004
  knucleotide,lua, ,20000,-2.004,-2,-2,62, 09/30/2004
  knucleotide,lua, ,30000,-2.004,-2,-2,62, 09/30/2004
  