The numbers are arithmetically quite OK!
But, in practice mixing wet woodgas and normal % humid air has never been a success in the same filter, (not even separate) just ahead of the motor inlet!
It may have to do with “vacuum shocks” (in the gasline) when stomping the gas pedal into floor position; the relative humidity shoots to 100%+ momentatrily (in the arriving gas) and condensing on the filter… Fresh air does not affect waterdrops.
After all, “normally” woodgas arrives 100%+misty into the motor-room!
Wet woodgas and normal % humid air can be mixed together just ahead of the motor inlet, but just in smooth (water-resistant) tubes.
To use paper filters for woodgas has to be done with reheated woodgas (after the cooler and wet filter) where the woodgas leaves the reheater, with the paperfilter “bucket” kept warm!