Question about glows BBT chart

Taylor • Wife to my soulmate💍👰🏼💑 Mommy to Gunner 10/12/2013👦🏻💙 & An angel baby 10/15/2017👼🏼👣❤️ & Growing our rainbow baby July 2018🌈👶🏼 Pcos strong beating the odds😍 God is my saver🙏🏼🙌🏼

So does glow change ovulation day based off temps or based off cycle?