A particular forecasting model was used to forecast a six$-$month period. Here are the forecasts and actual demands that resulted:

FORECAST ACTUAL

April $252190$

May $326256$

June $401317$

July $351287$

August $376303$

September $451393$

Find the tracking signal for each month.

Note: Negative values should be indicated by a minus sign. Round your answers to $2$ decimal places.

Is the model being used giving acceptable answers?