Can anyone express this data into mathematical formula / expression ( X vs Y) ?

Please see these figures at the following hyperlink;

http://mil.sensorsmag.com/sensorsmil/Aerospace/Cleared-for-Travel-Using-a-Gaussmeter-to-Check-Mag/ArticleStandard/Article/detail/270166

Magnetic Field Intensity Vs Test Distance

Figure 6-Table of Values for Test distance Vs Magnetic filed strength

Figure 7. Measurements of the field strength of a typical sintered neodymium-iron-boron magnet at increasing distances from the magnet s surface show that it would take a very large and very strong magnet or magnetized material to produce a measurable magnetic field at a distance of 7 or 15 ft. from a package s surface.

Thanks

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