Holden 304 V8 Original Timing Map

See attached screen shot of ignition advance table from the internet.

Can anybody confirm if the attached timing map is factory correct/original ?

I'm trying to get an understanding of what the factory was thinking around the 2400 column.

Cheers

I can't comment about whether they're the official values, but, wow, those are some big jumps!

It's normal for timing to be pulled a little around the torque peak because there's more cylinder filling, and added a little after - I would have expected a more gradual change, though.