yep... bottom of that article:
55-60% - Long term storage stage. I still leave the hygrometer in for about a couple of days/week, just to make sure it's leveled off (unless I have placed a Boveda 65% packet in, then I take the hygrometer out). Once it has leveled off, then I take the hygrometer out & seal the jar. I don't usually storage too much for long term usually just 1 jar per strain per harvest, unless it's just some incredible stuff and I want to be able to share it with long distance friends & family when they visit throughout the year.
If for some reason it reads under 55% - either you left it hanging to dry for too long with a fan blowing on it directly or too close to a heat source/vent or you might need to have a humidifier on a timer in the area you dry in (make sure it's not blowing the moisture directly on plants) OR maybe you just need to wait a little longer for your next reading. Wait 12-24 hours, and check again if still under 55 well you just learn a valuable lesson on how not to dry so quickly next time. It'll be shitty to smoke, guess you could grind it or tumble the heck out of it or maybe make tincture/butter/oil, vaping will probably be ok but smoking it is going to suck. But hey it takes experience, just learn from it....dumbass! LOL! You can re-hydrate a bit with either a Boveda pack (my recommendation) or with things like a bit of orange peel tossed into the jar. The smoke may mellow out & be smoke-able but it won't cure like it's supposed too. If you have never had properly cured cannabis - you're missing out!