Both chase the same targets but cannot hold them equally. ICAR-DMR quotes 95 percent relative humidity for a controlled spawn run and 80 to 90 percent for a seasonal one, because a ventilated shed cannot hold 95 percent. Each figure belongs to its own room.
Compost pairs with the room too. A tunnel unit makes short-method compost and a seasonal grower makes long-method compost, and ICAR-DMR reports 18 to 25 kg per 100 kg for the first against 10 to 15 kg for the second. Do not expect short-method yields from long-method compost.