In cases where it is possible to compare, the dynamic mass of the meteorite appears to be greater than actually determined

In cases where it is possible to compare, the dynamic mass of the meteorite appears to be greater than actually determined on the surface of the Earth. What is the reason for this contradiction?

When a meteoroid moves through the atmosphere, a thin molten surface layer of matter is blown away by air currents. The mass of the meteorite that fell to the Earth is less than its mass in outer space.

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