The CATT amount can be mine per user per hour will be determined by the amount of CATT holding. The formula is: (CATT Holding) * (Mining ratio) , where the Mining ratio is dynamically adjusted by the platform everyday, for example todays ratio is 0.1, and the user holding 10000CATT, then The amount of he can mine per hour is 10000 * 0.1 = 1000 CATT

The details of mining ratio could be found here

How to increase the volume of mining, please click here