What good is a 75% humidity pack for?

Hmm okay, I took all the suggestions and put the Boveda pack in a ziplock bag with a digital and analog hygrometer. First just in a bag, then I switched bags, then I left the bag half open letting each iteration sit for at least a few hours. The highest the digital hygro read was 65% and the analog was 57%.

So now how do I know if I have two inaccurate hygros or it's just super dry here? The digital hygro is a cheaper brand, but brand new.