The reading history data and graph is dependent upon the sensor type.
Go to Monitoring > Monitored Assets.
From the list, select the Name link of the asset to view.
From Reading History, select View. The reading history is available in both a graphical and list view.
By default, the first two sensors assigned to the Monitored Asset are selected. The readings of the selected sensor(s) are displayed in a graph view for the date range specified. To change the sensor data displayed, select or deselect a sensor.
If the Monitored Asset has more than one sensor assigned, each sensor is displayed. Selecting all sensors displays the history of each individual sensor. The sensor name represents the type of sensor, last four digits of the sensor gateway MAC address, and sensor channel (example: Temperature-6D:F5-1).
Set the date range to include.
To view the reading data in a list view, select Show Readings.
The graph displayed is dependent on the sensor type(s) assigned to the Monitored Asset.