TimeseriesContinuous(
    name='piecewise_linear',
    time_units=<Unit('year')>,
    values_units=<Unit('gigametric_ton')>,
    function=1st order ContinuousFunctionScipyPPoly(
        ppoly=scipy.interpolate._interpolate.PPoly(
            c=array([[-1.2,  2.3],
                   [10. , 12. ]]),
            x=array([ 1., 10., 20.]))),
    domain=(<Quantity(1, 'year')>, <Quantity(20, 'year')>))
