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Fertility indicators
You can view all previous temperatures by repeatedly pressing the key
to the “left” on the temperature display. You can also view a six-day
forecast by repeatedly pressing the “right” key.
Past and future fertility display / prediction
“Return” illuminated
Go back
Go forward
= Prediction
Press “ok”
“Return”
The device displays your temperature and your fertility for the day; this
data is valid for 24 hours, and accurate from the very first day. The num-
ber of “green” days increases cautiously and systematically, while the
“red” days are narrowed down. The Pearl Index is calculated as 0.7
(99.3%) from the first day on. If the device has not received any input for
a long period of time, or receives information that it cannot evaluate, the
number of “yellow” days increases.
“Green” illuminated
= infertile
“Red” illuminated
= fertile
“Red” blinking
= ovulation day
“Yellow” illuminated
= learning phase
“Red” “Yellow”
“Green” blinking =
probable pregnancy
“Red” “Yellow”
“Green” illuminated =
pregnancy confirmed
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