Need Help Creating Report - Uptime

I am currently using Solarwinds Application Monitor.  I have little to no SQL experience.

Management is asking for two monthly Uptime (availability) reports which shows the Uptime of the servers during business hours and a second report showing uptime during non-working hours.  In addition the reports should highlight the Priority of the servers.  I have created a custom field and have ranked the servers based on High, Medium and Low priority.  I need help building the report to show the Average Uptime at the end of each month during business and non business hours.  Using the web based report I am able to capture the node name, uptime % by node and priority however I am not sure how to gather the information for time of day.  Business hours are 8:00 to 4:30.  Can someone please help me with this request?

Thanks