All given in Hz.
**********************************
f_3Harm_VM =
          1461.256
          1461.585
          1461.706
          1461.885
          1464.530
          1465.024
          1466.960
          1467.392
          1468.495
          1468.588
          1469.985
          1470.223
          1470.612
          1471.057
          1471.298
          1471.702
          1472.454
          1472.687
          1472.781
          1472.967
          1481.975
          1482.555
          1492.018
          1492.4
          1494.347
           1494.366
          1497.190
          1499.59
          1500.062
          1500.423
          1500.848
          1501.300
          
**********************************
diff(f_3Harm_VM)
    0.3287
    0.1208
    0.1796
    2.6447
    0.4942
    1.9364
    0.4313
    1.1036
    0.0923
    1.3971
    0.2380
    0.3892
    0.4453
    0.2409
    0.4035
    0.7519
    0.2335
    0.0934
    0.1868
    9.0072
    0.5806
    9.4630
    0.3817
    1.9476
    0.0190
    2.8239
    2.3992
    0.4720
    0.3619
    0.4242
    0.4526

**********************************
max(f_3Harm_VM) - min(f_3Harm_VM)
   40.0441