Timeseries(
    time_axis=TimeAxis(bounds=<Quantity([ 1. 10. 20.], 'year')>),
    timeseries_continuous=TimeseriesContinuous(
        name='piecewise_linear',
        time_units=<Unit('year')>,
        values_units=<Unit('megametric_ton / year')>,
        function=1st order ContinuousFunctionScipyPPoly(
            ppoly=scipy.interpolate._interpolate.PPoly(
                c=array([[ 0.22222222,  2.        ],
                       [10.        , 12.        ]]),
                x=array([ 1., 10., 20.]))),
        domain=(<Quantity(1.0, 'year')>, <Quantity(20.0, 'year')>)))
