| E02ADF | Least squares curve fit, by polynomials, arbitrary data points |
| E02AFF | Least squares polynomial fit, special data points (including interpolation) |
| E02AGF | Least squares polynomial fit, values and derivatives may be constrained, arbitrary data points |
| E02BAF | Least squares curve cubic spline fit (including interpolation) |
| E02CAF | Least squares surface fit by polynomials, data on lines parallel to one independent coordinate axis |
| E02DAF | Least squares surface fit, bicubic splines |