Stock Ignition Map Continued

I've been doing some more work extracting the stock ignition map.
I've tried changing ECT and IAT temperature, enabling/disabling TEN, and playing with the WOT and closed throttle switches.
So far the only thing that seems to affect the timing is whether the closed throttle switch is shorted to GND or not.

Closed throttle ignition timing:

Open throttle ignition timing:

The data can be downloaded here and here.