Read Last Field Entry Age

The response is a JSON object with the age of the most recent value, in seconds:

{
    "last_data_age": "174",
    "last_data_age_units": "s"
}

The response is an XML object with the age of the most recent feed, in seconds:

<?xml version="1.0"?>
<feed>
  <last_data_age type="integer">174</last_data_age>
  <last_data_age_units type="string">s</last_data_age_units>
</feed>

The response is a CSV file with the age of the most recent feed, in seconds:

last_data_age
59

The response is the age of the most recent value, in seconds:

174