anchor.diff:  "Seveney","Sosnowski",40,0,1
   "Seveney","Gee",42,2,0.954545454545455
   "Seveney","Lynch",0,0,NA
  -"Seveney","O.Neill",0,0,NA
  +"Seveney","Neill",0,0,NA
   "Seveney","Doyle",28,0,1
   "Seveney","Goodwin",37,0,1
   "Seveney","Ciccone",42,0,1
  -"Seveney","Paiva.Weed",35,0,1
  +"Seveney","Weed",35,0,1
   "Seveney","Conley",45,0,1
   "Seveney","Hodgson",0,0,NA
   "Seveney","Lombardo",45,0,1
  
positive.code: "Metts","Lombardi",1664,26,0.984615384615385
  "Sosnowski","Gee",1097,78,0.933617021276596
  "Sosnowski","Lynch",1073,2,0.998139534883721
  "Sosnowski","O.Neill",1512,133,0.919148936170213
  "Sosnowski","Doyle",1518,3,0.998027613412229
  "Sosnowski","Goodwin",1798,0,1
  "Sosnowski","Ciccone",1248,6,0.995215311004785
  "Sosnowski","Paiva.Weed",1771,0,1
  "Sosnowski","Conley",1804,5,0.997236042012161
  "Sosnowski","Hodgson",625,17,0.973520249221184
  "Sosnowski","Lombardo",1620,6,0.996309963099631
  
negative.code: "Satchell","Sosnowski",1754,12,0.993204983012458
  "Satchell","Gee",1080,68,0.940766550522648
  "Satchell","Lynch",1061,11,0.989738805970149
  "Satchell","Neill",1480,133,0.917544947303162
  "Satchell","Doyle",1498,9,0.994027869940279
  "Satchell","Goodwin",1756,14,0.992090395480226
  "Satchell","Ciccone",1215,13,0.989413680781759
  "Satchell","Weed",1730,14,0.99197247706422
  "Satchell","Conley",1767,15,0.991582491582492
  "Satchell","Hodgson",615,23,0.963949843260188
  "Satchell","Lombardo",1585,13,0.991864831038799
  