coeffs                                                          coeffs:b0    coeffs:b1    coeffs:b2  method    model        r_square  uid                            x_end    x_start
------------------------------------------------------------  -----------  -----------  -----------  --------  ---------  ----------  ---------------------------  -------  ---------
1.9272727272727266:-0.0060606060606058845                         1.92727  -0.00606061  nan          full      linear       0.003367  SLListcls::Insert(int)             9          0
2.1090909090909093:-0.14242424242424243:0.015151515151515152      2.10909  -0.142424      0.0151515  full      quadratic    0.138047  SLListcls::Insert(int)             9          0
1.9636363636363634:-0.10303030303030296                           1.96364  -0.10303     nan          full      linear       0.194613  SLList_insert(SLList*, int)        9          0
2.5090909090909093:-0.5121212121212121:0.045454545454545456       2.50909  -0.512121      0.0454545  full      quadratic    0.437037  SLList_insert(SLList*, int)        9          0
