Is there an easy way to determine how man GB/day of logs are being ingested into our Log360 environment?  I found something online that states a formula for Windows: (number of events per day * 2000 bytes) or for Syslogs: (number of events per day * 400 bytes).  

That doesn't seem correct as we'd be at 193 GB/day, but our entire database + archive is at 6 TB since we started logging a year and half ago.