I really can't say, the best way to know is to candle the eggs.
Right now I have 7 eggs in the 56 egg incubator,
https://www.ebay.com/itm/LOT10-7-48...&sd=322365847511&_trksid=p2047675.c100623.m-1
They haven't hatched yet but I'm on day 8-9 and the chicks are all alive and looking good, and the air cells look great. The temp dropped to 36.9, but that was only once, other then that it has stayed 37.4 - 38.1
Right now I have 7 eggs in the 56 egg incubator,
https://www.ebay.com/itm/LOT10-7-48...&sd=322365847511&_trksid=p2047675.c100623.m-1
They haven't hatched yet but I'm on day 8-9 and the chicks are all alive and looking good, and the air cells look great. The temp dropped to 36.9, but that was only once, other then that it has stayed 37.4 - 38.1