People have cured buds for decades without using a hygrometer. It is useful for some people, but I don't believe that should be the primary focus of attention to get a special number of RH. This is because other factors will affect RH and how much it should be based on your specific conditions and factors. For example, if someone has a jar half full, it will usually have lower RH compared to someone with completely full jars. So what works for one situation might not work the same for you.
The buds look great, and I don't think the cure stops just because the RH is below 60%. Drying the buds slowly is the most important part IMO. When they rehydrate in the jars, the RH could drop below 60% and believe that is fine. They will continue to cure for weeks after this until they get to the point where they smell and smoke to your satisfaction.
If you want to keep as much RH as possible, don't burp more than once a day. The longer they cure, the less you will need to burp the jars. I think they will turn out great, and good luck.
LEX,
You made a reasonable, intelligent argument! Thank you, along with the others who contributed intelligently.
As you can see, these buds look just as good now, as they did after a 6 month cure.
I can not find a single scientific study on this topic, only my own studies with a few of my strains.
If anyone is interested, i can take a pic through a scope, and you will see the trichs are intact, still cloudy with some amber, the buds maintained their colors, and I have NOT grown in around 4 years.
For those who know when trichs turn amber, and beyond, they have degraded. The ages buds are as good as ever, but even smoother..
I am open to looking at real scientific studies, as I'm always willing to learn.
I'm betting 79 is a "Hardy boy", "Q", or some or just maybe slow (in which case, sucks)