As part of my ongoing tests for the LH2 VVT 4.6L V8 in my XLR I wanted more info than the published engine dyno from Cadillac offered.
To build a data table, I took the image of the engine dyno, and overlaid a line graph over the image, then modified the data table for the line graph until it perfectly or closely followed the engine dyno graph. You can see the spreadsheet line as dashed blue in the image.
Here is the resulting data table:
|RPM||LH2 Engine Dyno|
Having more exact data from the engine dyno lets me compare it to the results I am seeing in detail: