The Effective Age represents the number of months a device would have to run at target volume to achieve its reported life meter count. It is used to express how much a device has been used over its lifetime. The Effective Age of a device is calculated as:
Total Life Count Meter / Target Monthly Volume (months).
The Model Age of a device is the time that has elapsed since its model was introduced to the market.
The New Devices value is the number of in-service devices discovered in the last 30 days with an effective age of less than 1 month.
The Average Fleet Age is the average Effective Age across all in-service devices.