Temperatures

Kristen • Hubby & I have been together 10 years, married 11/8/14. Angel Baby - 10/22/15. Rainbow Baby Girl, Maggie, born 10-18-16!
Why do the temperatures record incorrectly? My baby's temp is 99.4. No matter how many times I put it in, delete it, or edit it....It keeps adjusting to 99.3.