crosshairs is the “plus” sign that is made on your chart (like with FertilityFriend.com) when your temperatures show that you have ovulated…. the vertical line is your ovulation day, and the horizontal line is your “cover line” — which is basically just the separation between pre-ovulation temps and post-ovulation temps.
in short… it’s what shows people who chart when they ovulated… so they can begin the ever-obsessive count down to TEST DAY!
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