(a) Real part of scattering length alpha for Na39K from spin-free calculations
as a function of electric field.
First column is electric field F (kV/cm) and second column is alpha (bohr).
        F           alpha
-------------------------------
      6.80        2.4870E+02
      6.82        1.5704E+02
      6.84        9.0043E+01
      6.86        3.8207E+01
      6.88       -3.2129E+00
      6.90       -3.6943E+01
      6.92       -6.4704E+01
      6.94       -8.7663E+01
      6.96       -1.0665E+02
      6.98       -1.2229E+02
      7.00       -1.3507E+02
      7.02       -1.4536E+02
      7.04       -1.5348E+02
      7.06       -1.5969E+02
      7.08       -1.6421E+02
      7.10       -1.6723E+02
      7.12       -1.6891E+02
      7.14       -1.6941E+02
      7.16       -1.6885E+02
      7.18       -1.6735E+02
      7.20       -1.6501E+02
      7.22       -1.6193E+02
      7.24       -1.5819E+02
      7.26       -1.5387E+02
      7.28       -1.4904E+02
      7.30       -1.4377E+02
      7.32       -1.3811E+02
      7.34       -1.3212E+02
      7.36       -1.2586E+02
      7.38       -1.1935E+02
      7.40       -1.1266E+02
      7.42       -1.0580E+02
      7.44       -9.8827E+01
      7.46       -9.1762E+01
      7.48       -8.4636E+01
      7.50       -7.7475E+01
      7.52       -7.0301E+01
      7.54       -6.3137E+01
      7.56       -5.5999E+01
      7.58       -4.8906E+01
      7.60       -4.1874E+01
      7.62       -3.4921E+01
      7.64       -2.8061E+01
      7.66       -2.1306E+01
      7.68       -1.4668E+01
      7.70       -8.1563E+00
      7.72       -1.7810E+00
      7.74        4.4494E+00
      7.76        1.0527E+01
      7.78        1.6445E+01
      7.80        2.2195E+01

(b) Changes in scattering lengths alpha_jj' due to effects of spin as a 
function of electric field. First column is electric field F (kV/cm) and 
rest are delta alpha in bohrs. These are calculated using coupled-channel
methods with basis of full spin structure.
       F        blue solid      green solid   red solid
-----------------------------------------------------------
     6.800        -0.513         0.540E-03     0.474    
     6.820        -0.445         0.984E-03     0.405    
     6.830        -0.414         0.110E-02     0.374    
     6.840        -0.388         0.108E-02     0.347    
     6.850        -0.366         0.890E-03     0.325    
     6.870        -0.341         0.354E-04     0.297    
     6.880        -0.334        -0.408E-03     0.290    
     6.890        -0.330        -0.698E-03     0.285    
     6.900        -0.326        -0.710E-03     0.281    
     6.950        -0.306         0.174E-02     0.261    
     7.000        -0.292        -0.500E-04     0.248    
     7.050        -0.282         0.260E-03     0.237    
     7.100        -0.273         0.400E-04     0.227    
     7.150        -0.262         0.140E-03     0.217    
     7.200        -0.250         0.123E-02     0.207    
     7.250        -0.239         0.124E-02     0.196    
     7.300        -0.226        -0.113E-02     0.185    
     7.350        -0.215         0.590E-03     0.174    
     7.400        -0.203        -0.680E-03     0.163    
     7.450        -0.191         0.690E-03     0.153    
     7.500        -0.180        -0.210E-02     0.143    
     7.550        -0.169        -0.644E-03     0.134    
     7.600        -0.158        -0.909E-03     0.124    
     7.650        -0.149         0.930E-04     0.116    
     7.700        -0.139        -0.970E-03     0.108    
     7.750        -0.132         0.203E-03     0.100    
     7.800        -0.124         0.232E-03     0.937E-01
     7.850        -0.116         0.260E-03     0.870E-01

Same as above except with basis set of MFR1
       F        blue circles  green circles  red circles
-----------------------------------------------------------
     6.800        -0.513        -0.108E-02     0.473    
     6.820        -0.429        -0.780E-03     0.386    
     6.840        -0.384         0.223E-03     0.340    
     6.860        -0.356         0.642E-03     0.312    
     6.880        -0.339         0.347E-03     0.294    
     6.900        -0.327         0.729E-03     0.281    
     6.920        -0.317         0.211E-02     0.272    
     6.940        -0.307         0.855E-03     0.264    
     6.960        -0.305        -0.560E-03     0.258    
     6.980        -0.298        -0.105E-02     0.252    
     7.000        -0.293         0.450E-03     0.248    
     7.020        -0.289        -0.600E-03     0.243    
     7.040        -0.285        -0.580E-03     0.239    
     7.060        -0.279         0.107E-02     0.235    
     7.080        -0.276        -0.840E-03     0.231    
     7.100        -0.273         0.420E-03     0.227    
     7.120        -0.268        -0.540E-03     0.223    
     7.140        -0.263        -0.550E-03     0.219    
     7.160        -0.259         0.280E-03     0.214    
     7.180        -0.254         0.500E-03     0.210    
     7.200        -0.251        -0.190E-03     0.206    
     7.220        -0.246        -0.770E-03     0.201    
     7.240        -0.241        -0.760E-03     0.197    
     7.260        -0.236        -0.990E-03     0.193    
     7.280        -0.232        -0.229E-02     0.189    
     7.300        -0.226        -0.189E-02     0.185    
     7.320        -0.223        -0.180E-02     0.180    
     7.340        -0.218         0.200E-03     0.176    
     7.360        -0.213        -0.143E-02     0.171    
     7.380        -0.209        -0.220E-03     0.167    
     7.400        -0.203        -0.800E-03     0.163    
     7.420        -0.198        -0.940E-03     0.159    
     7.440        -0.194        -0.875E-03     0.155    
     7.460        -0.189        -0.501E-03     0.150    
     7.480        -0.186        -0.438E-03     0.146    
     7.500        -0.180        -0.265E-03     0.143    
     7.520        -0.177        -0.145E-02     0.139    
     7.540        -0.171        -0.242E-02     0.135    
     7.560        -0.168        -0.477E-03     0.131    
     7.580        -0.163        -0.563E-03     0.128    
     7.600        -0.160        -0.720E-03     0.124    
     7.620        -0.155        -0.128E-02     0.120    
     7.640        -0.151        -0.790E-03     0.117    
     7.660        -0.146        -0.152E-02     0.113    
     7.680        -0.143        -0.192E-03     0.111    
     7.700        -0.140        -0.174E-03     0.108    
     7.720        -0.137        -0.168E-02     0.104    
     7.740        -0.132        -0.147E-03     0.102    
     7.760        -0.130        -0.141E-02     0.980E-01
     7.780        -0.128        -0.875E-03     0.956E-01
     7.800        -0.123         0.609E-03     0.931E-01

Same as above except calculated from the semiclassical model
       F        blue dashed    green dashed   red dashed
-----------------------------------------------------------
     6.800        -0.645        -0.950E-04     0.645    
     6.820        -0.604        -0.301E-03     0.603    
     6.840        -0.583        -0.249E-03     0.582    
     6.860        -0.571        -0.240E-03     0.571    
     6.880        -0.564        -0.165E-03     0.564    
     6.900        -0.559        -0.272E-03     0.559    
     6.920        -0.556        -0.640E-04     0.556    
     6.940        -0.554        -0.118E-03     0.553    
     6.960        -0.552        -0.274E-03     0.551    
     6.980        -0.549         0.400E-05     0.549    
     7.000        -0.547        -0.177E-03     0.547    
     7.020        -0.545        -0.251E-03     0.545    
     7.040        -0.542        -0.400E-05     0.542    
     7.060        -0.540        -0.280E-03     0.539    
     7.080        -0.537        -0.118E-03     0.536    
     7.100        -0.533         0.220E-04     0.533    
     7.120        -0.530        -0.296E-03     0.529    
     7.140        -0.526        -0.820E-04     0.526    
     7.160        -0.522        -0.100E-03     0.522    
     7.180        -0.518        -0.420E-04     0.518    
     7.200        -0.514        -0.285E-03     0.513    
     7.220        -0.509        -0.152E-03     0.509    
     7.240        -0.504         0.500E-05     0.504    
     7.260        -0.499        -0.144E-03     0.499    
     7.280        -0.494        -0.235E-03     0.494    
     7.300        -0.489        -0.235E-03     0.489    
     7.320        -0.484        -0.970E-04     0.484    
     7.340        -0.479        -0.980E-04     0.479    
     7.360        -0.474        -0.164E-03     0.474    
     7.380        -0.469        -0.212E-03     0.469    
     7.400        -0.464        -0.151E-03     0.463    
     7.420        -0.459        -0.197E-03     0.458    
     7.440        -0.454        -0.236E-03     0.453    
     7.460        -0.449        -0.143E-03     0.448    
     7.480        -0.444        -0.970E-04     0.444    
     7.500        -0.439        -0.263E-03     0.439    
     7.520        -0.434        -0.173E-03     0.434    
     7.540        -0.430        -0.278E-03     0.429    
     7.560        -0.425        -0.980E-04     0.425    
     7.580        -0.421        -0.560E-04     0.421    
     7.600        -0.417        -0.255E-03     0.416    
     7.620        -0.413        -0.191E-03     0.412    
     7.640        -0.409        -0.248E-03     0.408    
     7.660        -0.405        -0.204E-03     0.405    
     7.680        -0.402        -0.123E-03     0.401    
     7.700        -0.398        -0.580E-04     0.398    
     7.720        -0.395        -0.490E-04     0.395    
     7.740        -0.392        -0.127E-03     0.392    
     7.760        -0.389        -0.290E-04     0.389    
     7.780        -0.386        -0.510E-04     0.386    
     7.800        -0.384        -0.195E-03     0.383    
