Inaccurate performance data for BOB fighters in COD comparing to RL data

[Crumpp]

The figures up to May are combined 87/100 octane figures which is why they are in the centre, a junior school student could work that one out.

Just like the 1938 figure is combined. Really? I highly doubt it.

If 100 Octane was on the airfields in significant amounts, it would reflect on that document.

It does not and you can read the Operating Notes to see that 87 Octane is the most common fuel in June 1940.