The Last 7 Days (Aggregated Across All Database Nodes) chart has an y-axis (GB/s) and an x-axis (time). The x-axis increases in hour increments from 07/09 13:00 to 07/15 22:00. The chart shows that the average receive rate jumped from 0 to 6.5 on 07/14 13:00. The average transmit rate increases from 0 to 1 on 07/14 01:00.