Report Period: User can choose the time parameter of the report. Top 10 and average report are fixed with 12 months. Favourite reports use their time parameters. (e.g. today is 14.06.2017)
1 Month: use last 1 month from today for time parameter. (e.g. 14.05.2017 → 14.06.2017)
3 Months: use last 3 months from today for time parameter. (e.g. 14.03.2017 → 14.06.2017)
6 Months: use last 6 months from today for time parameter. (e.g. 14.12.2016 → 14.06.2017)
12 Months: use last 12 months from today for time parameter. (e.g. 14.06.2016 → 14.06.2017)