_GPSFIXTYPE returns the type of the fix as an integer.
0 = no fix
1 = 2d fix
2 = 3d fix
The GPS internal variables require a GPS (internal or external) that supports the Windows Sensor Location APIs. Note that your GPS may not support all of the variables. If a value is not supported Windows will return "Element not found". Unless otherwise specified, the values returned are decimal numbers (for example, 38.735122).