The 95th Percentile method is used to determine your bandwidth usage. In order to calculate the traffic rate for which you will be billed, we measure your usage every five minutes, 24 hours a day, for each day of the month. Each five-minute reading, also called a 'sample', contains the number of bytes transferred in or out. Let's say, for example, that you transmit 86MB of traffic in a five-minute period then we will convert that into a rate of 2.293Mb/sec for that sample. We will collect all samples for a given period and sort them (there will be 8,640 five-minute samples in a 30-day month). Then we ignore the highest five percent of those samples i.e. in our example this means that the top 432 samples will not apply to your bill. In other words in a 30 day billing period, you can 'burst' for 36 hours. The value of the next highest sample after discarding the highest five percent of samples will become the 95th percentile value for the given billing period at which your account will be charged.
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