Zoho Desk Reports

Zoho Desk Reports

I need some assistance with the following exported report of the last 7 days from the report dashboard.    The numbers don't make sense to me.   

We have entered business hours of 8am-5:30pm M-F and have sat and sunday with out hours .  Does the time still get calculated on these days?  it is appearing to and radically changing the resolution time from one day to the next.

Date New Support Requests Closed Support Requests Backlog Great! Okay Bad First Response Time Response Time Resolution Time
19 Apr 1 4 331 0 0 0 33:02 hrs 33:02 hrs 2881:01 hrs
20 Apr 2 2 326 1 0 0 00:00 hrs 00:00 hrs 44:49 hrs
21 Apr 1 5 323 0 0 0 00:43 hrs 01:04 hrs 81:30 hrs
22 Apr 0 0 323 0 0 0 00:00 hrs 00:00 hrs 00:00 hrs
23 Apr 0 0 323 0 0 0 00:00 hrs 00:00 hrs 00:00 hrs
24 Apr 3 0 324 0 0 0 00:13 hrs 00:13 hrs 00:00 hrs
25 Apr 3 23 286 1 0 0 19:17 hrs 33:48 hrs 4287:38 hrs