Lowest to highest temps?

[cluckers&quackers]

This is my first hatch, so I would like to check on this. My eggs were put in the bator Tuesday, temp has been holding steady at 99.5 Last night my temp was holding at 99 and still at 99 this a.m

Is this okay? At what temp ranges should I not worry? Like the lowest to highest range.

I am using the brinsea octagon 20 eco.

Thanks!!

 

[bahamas]

lowest would be around 95 - 96 but the higest would be 104 - 105.