Later engineer feedback:
The figure on the left is the [flow graph], and the figure on the right is the [bandwidth graph]. The difference between the two is a time dimension. The flow unit is Byte. The bandwidth unit is bit/s. Flow = bandwidth * sampling time occupies 10M at the peak time in your screenshot. Take bandwidth as an example. Flow rate =10Mbit/s* ( 5min*60 ) =3000Mbit=375MByte ( 1Byte=8bit ) .