How does OvaGraph interpret my BBT readings to determine when ovulation occurs?

OvaGraph interprets your BBT readings using a combination of algorithms in addition to the cervical mucus/fluid and vaginal sensations that you’ve charted. Generally speaking, once an appropriate temperature rise is detected near cycle days that you see fertile quality cervical mucus/fluid and/or experience fertile vaginal sensation, followed by temperatures that remain elevated for a minimum of 3 out of 4 consecutive readings, OvaGraph will display the likely ovulation day with a purple vertical line and a coverline with a purple horizontal line.

If your Chart Settings is set to BBT Mode:

OvaGraph interprets your BBT readings using a combination of algorithms. Generally speaking, once an appropriate temperature rise is detected, followed by temperatures that remain elevated for a minimum of 3 out of 4 consecutive readings, OvaGraph will display the calculated ovulation day with a red vertical line and a coverline with a red horizontal line. OvaGraph will continue to track your BBT readings, and if a subsequent temperature shift is detected (followed by sustained temperatures), a "possible" ovulation day will be displayed. The purpose of displaying this "possible" ovulation day is to allow you the opportunity to interpret your BBT data more fully, and to consider other fertility tracking methods to determine when ovulation occurred.