Fuel burn rate

[potterhead2002]

What kind of fuel burn rate would I expect from a late model Merc 150 4-stroke on a 20' Trophy?
Assume midrange speed/rpm.

 

[Sandy]

In case no one here has that combination, you may get some idea of what to expect from this list of observations:
https://www.activefisherman.com/boat-specs/boat-fuel-economy

 

[potterhead2002]

Wow, that’s a lot of data.
Thanks