I have a bucket with size more than 120GB on multi-region. There is data transfer between multi-region and region, and I need monitoring the metric usage of data transfer in some period because need to compare with the GCP billing

Here is the billing in last 1 week

I only found these metrics on monitoring dashboard, I can’t find the right metric.

Is there anyway to monitoring the usage of data transfer on metrics, so I can compare it with GCP billing to make sure the usage.