If those are the only fluctuations you've had this entire hatch, consider yourself lucky

My temperatures have been as inconsistent as Casey Anthony's excuses this hatch and I've got a pip. If I get chicks out of this, then you should certainly get some as well. Lol.
I was up all night as well, temp stayed between 98-100, I've learned to leave the dial alone. the incubator will correct the 98 in due time, when I mess with the thermostat, I usually end up coming home to 101-102 in the bator and having a mini freak out about it.
I just watched the eggs for a while, and I think one of my partridge silkies is rocking! The egg definitely moved on 2 different occasions and I check to make sure it wasn't me hitting the table or anything. It wasn't! The rocking partridge was another egg that I hasn't seen movement in either so I'm crossing my fingers that I get a good hatch after all!