#1. Lower your expectations before reading this.

Some cigars are likely to better at a certain Humidity & Temp.
In a Humidor with a solid seal, of good construction properly seasoned, and that's a whole nother thing.
Cigars of the same brand, same crop,etc. should smoke extremely well...if they are any good to start with.
Get a mix, brands,years,wrappers,etc,etc all in that box and ?
Accuracy of the hygrometer...scientists may have ones that are extremely accurate, one would expect they do.
Those may be rather costly, maybe no more than the sticlker price of the top of the line Bentely automobile.
Would you need, really need one of those?
Most that are a bit affordable, for many Cigarbums will be accurate with in a certain + / - range.
Cigars, Cubans and others have smoked for some time.
Smoked just fine,even tho kept or stored at at least a bit outside the perfect range of Humidity and Temp.

Now, that didn't help one little bit, did it?