It is a supplement to the book entitled „Unknown Earth – unknown hypotheses” (https://amzn.to/4dPba3s).
With the assumed dimensions of the inner core (specified in cells B7167 and B7170 of the RESULT sheet in the attached file), one can compare the range of variations in the Earth’s gravitational acceleration caused by the Moon and the Sun (in cells ET5 and ET6) with the variations caused by the longitudinal inner core (in cells HY5 and HY6).