sfit[10] = (1 - x)^0.5202452390146334*x^0.30748639158513635*
     (0.4718881975622957 - 0.19590453654431558*(1.9156954128806467 + 
        4.823411209122395*(-2 + 2*x) + 2.3099076333117177*(-2 + 2*x)^2) + 
      0.0041946716954915095*(0.21275884742949702 + 2.8277316305997697*
         (-1 + 2*x)))
 
sfit[12] = (1 - x)^0.6309909250962163*x^0.5013388534777242*
     (0.6410977132967124 - 0.19262945687084992*(2.1455611614212136 + 
        5.436061073466448*(-2 + 2*x) + 2.651059897182862*(-2 + 2*x)^2) - 
      0.028212840171776058*(0.12965207161849213 + 3.1323297785739403*
         (-1 + 2*x)))
 
sfit[15] = (1 - x)^0.7856203712802688*x^0.4717467001310815*
     (0.7146262704803211 - 0.23908251826680613*(2.4870302408056775 + 
        5.929704221070638*(-2 + 2*x) + 2.7978176815186258*(-2 + 2*x)^2) + 
      0.02482963292303991*(0.31387367114918735 + 3.2573670714113505*
         (-1 + 2*x)))
 
sfit[20] = (1 - x)^0.8836406159733493*x^0.33655681255118325*
     (0.6623879162231372 - 0.3140880292417905*(2.715871293058904 + 
        6.084766356159815*(-2 + 2*x) + 2.753782970531202*(-2 + 2*x)^2) + 
      0.10651340662801657*(0.5470838034221661 + 3.2201974285245325*
         (-1 + 2*x)))
 
sfit[30] = (1 - x)^1.149196385804488*x^0.5347306315160106*
     (1.0375533219804611 - 0.37430317394366763*(3.3841207452797804 + 
        7.3753030171588545*(-2 + 2*x) + 3.327887415113175*(-2 + 2*x)^2) + 
      0.13215067142766812*(0.6144657542884774 + 3.6839270173204985*
         (-1 + 2*x)))
 
sfit[40] = (1 - x)^1.32338572142428*x^0.5111915315684401*
     (1.1295383230864224 - 0.43638605230517735*(3.860753465971251 + 
        8.033582505859313*(-2 + 2*x) + 3.52596430851842*(-2 + 2*x)^2) + 
      0.22661450284489854*(0.8121941898558398 + 3.83457725299272*(-1 + 2*x)))
 
sfit[50] = (1 - x)^1.3651821601017016*x^0.45342955851614813*
     (1.073526948440747 - 0.4933654939476331*(3.9796344052825265 + 
        8.107753095974893*(-2 + 2*x) + 3.5047038266773893*(-2 + 2*x)^2) + 
      0.276010816531603*(0.9117526015855535 + 3.81861171861785*(-1 + 2*x)))
 
sfitAll[10] = (0.1520982522881667 - 0.19310199999118188*
       (0.6370925573820266 + 2.295028523182324*(-2 + 2*x) + 
        1.2060782906751901*(-2 + 2*x)^2) - 0.07198397004294234*
       (-0.1770504016193681 + 1.646208245714438*(-1 + 2*x)))/
     ((1 - x)^0.2654210779524651*x^0.088370676333097)
 
sfitAll[12] = (0.18692081524883714 - 0.20645354667646432*
       (0.7657639599211084 + 2.575565262865739*(-2 + 2*x) + 
        1.3362400842328561*(-2 + 2*x)^2) - 0.06756306211754848*
       (-0.13807729856154563 + 1.80755509007225*(-1 + 2*x)))/
     ((1 - x)^0.1652611042446479*x^0.027183805683102264)
 
sfitAll[15] = (1 - x)^0.09491514114148715*x^0.12879642368404653*
     (0.29724072725630774 - 0.21833335059717993*(1.146877153721185 + 
        3.376701083912964*(-2 + 2*x) + 1.7020034772519281*(-2 + 2*x)^2) - 
      0.05900691642059036*(-0.033881282542559385 + 2.2237115648255337*
         (-1 + 2*x)))
 
sfitAll[20] = (1 - x)^0.3351584880715021*x^0.2829601021398929*
     (0.44395893908256845 - 0.24737985064879078*(1.558903338170441 + 
        4.224440168390719*(-2 + 2*x) + 2.088612590380586*(-2 + 2*x)^2) - 
      0.05628953973910925*(0.05219838593160919 + 2.6181185902113953*
         (-1 + 2*x)))
 
sfitAll[30] = (1 - x)^0.6458851394739555*x^0.49510239824174024*
     (0.7325466206578141 - 0.3002809201958812*(2.177411515907579 + 
        5.478288694394403*(-2 + 2*x) + 2.6610956656540496*(-2 + 2*x)^2) - 
      0.06104523871588112*(0.1507827412322153 + 3.140987537715696*(-1 + 2*x)))
 
sfitAll[40] = (1 - x)^0.8443062784427525*x^0.6347276290809983*
     (1.0008216783880737 - 0.34462404638695876*(2.622885963573054 + 
        6.36987213226389*(-2 + 2*x) + 3.067597331533904*(-2 + 2*x)^2) - 
      0.07024747621794933*(0.2095786493617542 + 3.4790339075237506*
         (-1 + 2*x)))
 
sfitAll[50] = (1 - x)^0.9879527682745488*x^0.734911802937713*
     (1.2476551239806086 - 0.382303022821899*(2.9699544885824953 + 
        7.055848134869734*(-2 + 2*x) + 3.3785392911530305*(-2 + 2*x)^2) - 
      0.07974220819830065*(0.25304096533683584 + 3.722864571212262*
         (-1 + 2*x)))
 
fitMassSquared = 0.3814062497992905 + 9.21474765359311/k^2 - 
     2.8054347238814357/k - 0.0007731066750167008*k + 
     0.42168678100536616*Log[k]
