longitude of landing point, 2 bytes

0 to 359.
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latitude of landing point, 2 bytes

1 to 119, 60 being the equator.
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capsule x, 4 bytes integer

range is 0 to 3276800, aligned to boundaries of 16384 (sub-quadrants)
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capsule z, 4 bytes integer

range is 0 to 3276800, aligned to boundaries of 16384 (sub-quadrants)
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capsule x within sub-quadrant, 4 bytes integer

range is actually 0 to 16384.
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capsule z within sub-quadrant, 4 bytes integer

range is actually 0 to 16384.
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x position of yourself, 4 bytes IEEE (floating-point)

range is 0 to 3276800.
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y position of yourself, 4 bytes IEEE (floating-point)

range is (about) -260000 to zero (zero = sea level).
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z position of yourself, 4 bytes IEEE (floating-point)

range is 0 to 3276800.
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alpha angle of sight, 4 bytes IEEE (floating-point)

yaw, in degree, range -45 to +45.
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beta angle of sight, 4 bytes IEEE (floating-point)

pitch, in degree, range -180 to +180.
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radiation visor animation delta, 2 bytes

can be -5, 0 or +5... doesn't really matter...
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radiation visor animation count, 2 bytes

0 to 170 or so... doesn't matter...
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radiation visor flag, 1 byte

0 = opened, 1 = closed...
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total size of surface.bin = 45 bytes, always.