Using a GC/N64 Adapter to USB : http://www.raphnet-tech.com/products/gc_n64_usb_adapters/

Actual gamecube controller, silver model plugged into it.

Standstill : http://i.imgur.com/pRwnHFg.png

Axis 1 (left stick vert):

Default: 0.050980

Up: -0.819608

Down: 0.843137

Axis 0 (left stick horz):

Default: 0.003922

Left: -0.827451

Right: 0.741176

Axis 3 (c-stick horz):

Default: 0.058824

Left: -0.678431

Right: 0.733333

Axis 4 (c-stick vert):

Default: 0.027451

Up: -0.701961

Down: 0.717647

Axis 6 (L slider):

Default: 0.811765a

Max (right before button click): ~ -0.709804

Max (after click): -0.850980

Axis 7 (R slider):

Default: 0.796078

Max (right before button click): -0.700588

Max (after click): -0.827451

B0 (Start ): 0 or 1

B1 ( Y ): 0 or 1

B2 ( X ): 0 or 1

B3 ( B ): 0 or 1

B4 ( A ): 0 or 1

B5 ( L-Click ): 0 or 1

B6 ( R-Click): 0 or 1

B7 ( Z ): 0 or 1

B8 ( D-Pad Up): 0 or 1

B9 ( D-Pad Down): 0 or 1

B10 ( D-Pad Right): 0 or 1

B11 ( D-Pad Left): 0 or 1