Setting Time Period in the Detailed Statistics

For generating the statistics you need to choose time period for which you want to display data from drop-down menu.

Preset period:  automatically fills from-to

• Today
• Yesterday
• This week (excl. today)
• Last week
• This month (excl. today)
• Last month
• Last 30 days
• Whole period (excl. today) – automatically fills time period from campaign's start till yesterday.
• Whole campaign period - automatically fills time period from campaign's start to campaign's end. It is used for whole campaign's statistics after campaign's end. 

Custom period allows you to set any period from-to

There isn't possible to generate shared report for previous period and current period at the same time in Reporting portal. When selecting This week, This month, Whole period, Custom period the end date will be automatically changed to yesterday. 
The choice "today" isn't included in periods because numbers of today are processed continuously and  separate generating significantly speeds up the generating of statistics.  
E.g. If you want to generate statistics from 1.3. to 4.3.2010 during the day 4.3.2010:

1. choose the "Custom period (excl. today)" and set the period from 1.3.2010 to 3.3.2010.  You get data for the period 1.3.-3.3.2010.
2. choose the "Today". You get data for today.