What is Slicer in Excel 2013

 We are having generated output in excel containing employee number , date & total working hours for a month.

Columns
Emp No
EMpName
1st date
2nd date
3rd date,

Till
31st of May 2016

I woul like to serach where value is less than 8.5 .... by values or by formula like "< 8" 

We tried , but not getting  exact option in excel.

Finally today  got an alternative solution yet more  beauty  !!!!

Here  it is  ---SLICER- OPTION