How can I get Gigabyte instead of number of records?

I have configured elasticsearch, kibana and logstash. fortigate firewall sends logs. While creating dashboard, It gives count of records. How can I get Gigabyte instead of count of records?

May I explain further? what I expect is top 5 IPs with their total usage in Mega Byte. How can I achieve it?
Hope to hear from you.

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.