What is this table "wp_websitez_stats" ?

Hi, I just optimized my WordPress installation’s tables using WP Optimizer plugin. However my attention was caught on this table called “wp_websitez_stats” which seeming is so large and is occupying 19788.672 Kb which is a lot. The average tables take up much less space. I had a wordpress stats plugin installed (can’t remember the name) could this be its table? Or which plugin uses this table? I don;t have any wordpress stats plugin installed now, I use Jetpack and Google analytics. Is the table important or can I delete it without messing up my install?