You can try to create a Tabular Custom Report with a keeping the Time frame for last 1 day AND under filters , set the values for MEDIA ->'Media Volume Group Name' (To make sure we only consider Removal Media and not on Disk)
AND JOB->Job Type = Duplication | Backup ( To make sure we only consider backups and duplication jobs and not Restore) .From the Display option ,select Job size with Opertaion ( Total ) .The tabular report will show you the size of dat awritten on the tape for that particular day (last 24 hours).
Deeps
