SiteGround monitors closely all operations on the servers and makes sure that all user cron jobs are being run on time.

If you'd still like to check your cron jobs you should provide a valid email account when setting the Cron jobs in cPanel.

When you specify a valid email you will receive the output in question and make sure everything has been executed correctly.

Please bear in mind that you will receive an email for each cron job executed. This may flood your inbox in case your cron runs too often.