Firsthand experience- I've only been hatching for a year. But have hatched consistently each month, sometimes running multiple batches. I've also hatched peachicks and quail, but primarily chickens. My last 3 hatch rates of mine own eggs were 100%, 100%, and 90%. I've also hatched a lot of shipped eggs with rates from 0-90%.
Your general location-Southern NY
Time of year/average weather conditions- I hatch year round. From hot and humid to cold and dry.
Brand and model of incubator-
Brinsea Mini & octagon 20, both Eco.
How it's equipped (still air, forced air, type of thermostat such as analog or digital, and proportional or not if known)-Forced air, glass thermometers, dial hygrometers (I own a spot check too). I prefer to hand turn my eggs 5xday but I also have an auto-turner for larger batches.
Incubation set temperature and where measured - around 100 degrees at the top of the eggs.
What kind of eggs- mostly Silkies, shipped and my own. But I'll hatch anything. Ducks will be my next challenge.
How you control humidity and what you tried to maintain- the
brinsea mini holds humidity amazing. I usually fill one well to reach 45% days 1-18 and 1 & 1/2 wells to reach 75% for the last 3 days. The octagon 20 has been a nightmare this winter, humidity has run very low and I'm working on a solution. I like higher humidity for both incubation and hatch.
How long it took to hatch-I usually have hatches on day 20 for chickens.
Whether you assisted in hatching-yes, I assist while hatching if necessary. I also remove chicks as soon as they start knocking the other eggs around.
What percentage made it to 3 days- I usually always have 100% make it.
Eta: I have 11 eggs on day 10 in my mini that I am hand turning. These are my first "paint" silkie eggs from my own flock.