It might take awhile for the one you put in to be accurate, so I would guess actual humidity is somewhere between the two readings, the eggs could be releasing moisture too. Some people swear by dry hatching, I've had bad experience with too low of humidity. I've read more about people hatching in cartons than not, the reasoning with shipped eggs is damaged air cells and non shipped eggs to keep the incubator clean and to keep the hatched chicks from boweling the other eggs. They all have chopped them down though and there is a debate between paper or styrofoam. I used paper cartons cut down someone posted nice photos of their modified cartons on this thread or other 9300. Other people say to leave them lying that the gravity helps. My first chick to hatch was flipping all over the place and wedged herself between the carton and wall, so I ended up quickly pulling a carton out, I had two half full, so I ended up with one full carton to one side. I ended up opening incubator during hatch which is not good. So Geeky if I had them on their sides I would just leave them on their sides, less obstacles and the incubator needs to be cleaned out anyway! It's also harder to see the pips if they do it low or at the pointy end.
