polynomial fit:

    1.033056   +-   0.017488
    1.740036   +-   0.232731
    3.703195   +-   0.820021
    3.069267   +-   0.967989
    5.389253   +-   0.343813

Chi-squared   107.806854

Legendre polynomial fit:

    3.345296   +-   0.350307
    3.581617   +-   0.792447
    5.548350   +-   0.731828
    1.227717   +-   0.387197
    1.231825   +-   0.078586

Chi-squared   107.806862