Toriodal Instances in 10**7 by 10**7 Square
Sample Size = 1,000,000 (for TSP instances up to 1,000 and SUB up to 10,000)
GAP - (OPT - SUB) / SUB (given as a percentage)

   10  0.065807
   20  0.244144
   30  0.356717
   40  0.427750
   50  0.470179
   60  0.500383
   70  0.520644
   80  0.534875
   90  0.546420
  100  0.555375
  200  0.594177
  300  0.605258
  400  0.610311
  500  0.613170
  600  0.615134
  700  0.616565
  800  0.617533
  900  0.618334
 1000  0.619007