What does "User left” mean?

• User left during daytime. This detects the individual leaving home during daytime hours (7am-9pm).
• User left during nighttime hours. This detects the individual leaving home during nighttime hours (9pm-7am). 

This event notification is based on a combination of sensor activations and wearable activity. 

You can view sensor activity in the Sensor Activity Chart in the Events page of the MySense app.