100% dry hatch or partial dry hatch?

[Tex452]

Humidity is different across the country, ours in the Bryan Texas area is usually high this time of year, unless we get a cold front, then it is lower, I watched a lot of videos on dry hatching and decided to give it a try, I will know this weekend how it will turn out.
These are barnyard chickens I got from one of my sons, I want to get it right before I start hatching wyandottes.

Several started pipping this morning, how long should it take after they start pipping to hatching out?

 

[Tex452]

How well Dry hatching works, and how to go about dry hatching depends on your relative humidity. You can not base how much water to add or not add on what someone across the country did, or even what worked in a different season in your own town. Find a gage that works and aim for the percentage you want or weigh your eggs. (Don't follow incubator instructions about what channels to fill with out confirming the humidity)

Two have hatched out with more pipping, humidity inside is 68%.
I’m getting excited now.