3 -- number of faces

 1. Frontal Face
   414   197      -- Position
     -2          -- size
    -0.40       -- confidence

 2. Frontal Face
   315   205      -- Position
     -1          -- size
    -0.15       -- confidence

 3. Frontal Face
   237   212      -- Position
     -1          -- size
     4.84       -- confidence