how can i make an availability report of all my switches devices?

how can i make an availability report of all my switches devices?

Hi,
i know i can make a report with one switch, that report show me availability this day, last week, lasth month, custom period, etc. but this is just for only device.
 
i want to make a report with this features but including more devices in just one report.
 
is that posible??
 
thanks for your help.
 
regards

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