Bandwidth btw EC2 instances

What is the bandwidth between EC2 Instance?

Compute – Amazon EC2 Instance Types – AWS - In this site mentioned 4 Types(very low, low, moderate, high) of Bandwidth levels, Does any one know exactly how much

AWS has not released any numbers. Based on the some surveys available, these are some of the approximate numbers.
You can refer the link for more info -
amazon ec2 - AWS, Bandwidth and content delivery - Server Fault … t-delivery