A Sleep Quality Indicator is a measurable statistic the lends insights into how well your Baby is sleeping. With the Dream Sock, we track heart rate, oxygen level, noise, wakings, room temperature, humidity, and movement to determine if Baby is getting quality sleep. Our proprietary algorithm gets to know your baby by tracking your baby’s Sleep Quality Indicators to learn your baby’s sleep baseline. If your baby’s sleep indicators differ from the expected baseline, you will receive a “Sleep Assist Prompt" on your Base Station and in the Dream App letting you know baby may be uncomfortable or need help getting back to sleep.