# How is RF data encoded in WAV files?

I have tried recording RF data using several different software packages: SDR Console, SDR# and HDSDR. They all seem to produce WAV files. When I open the HDSDR file in Mathematica, it says the file is "Integer16" meaning 16-bit PCM data and that the sample rate is 2400000, which I guess means 2.4 million samples per second. The data has two channels. The first 10 elements of each of these channels is:

{0.00421143, -0.00283813, -0.00268555, -0.00271606, -0.00268555,
0.00488281, -0.00378418, -0.00241089, -0.00234985, 0.00363159}

{0.00479126, -0.00332642, -0.00323486, -0.00338745, -0.00344849,
-0.00228882, 0.00415039, -0.00344849, -0.00344849, 0.0055542}


From what I understand each of these values is a composite of two bytes, but why would it be a float if it Integer16?

Also, how do I do determine the quadrature? How is the quadrature encoded?