The trend view today is limited to just under one complete day.
If I enter 10/12/15 10am - 10/13/15 10am for the custom parameters the timeslices displayed are: 10/12/15 10am-11am - 10/13/15 9am-10am.
This is actually one less timeslice than I want to see. I want to see how the same timeslice performed yesterday.
Actually, it would be nice to be able to enter 2-3 days in the custom view. This way I can see how 2-3 full days look in a trend.