Good morning friends. This is a first-time post to this forum and the answer may be obvious. 
I’m trying to understand a seeming discrepancy between what the total usage for a date shows and what the expanded items for that date shows. I’ll paste a screen shot below. The question concerns the usage for 12/5. The date total shows just over 1 GB and the expanded view only adds up to slightly over half that total. Thanks for any suggestions you’re able to offer. ~Robert
I have no explanation for the bandwidth issue.
But, I find the source IP of 100.173.123.240 very interesting. You might want to block and log that to see which device it is coming from. As a rule, I block and log anything with a source IP that is not from a subnet the router is using.