Summary metric

JSON object metric that samples observations, providing a count of observations, sum total of observed amounts, average rate of events, and moving average rates across sliding time windows.

Summary values have the following fields:

{
  "count": (number) events recorded for this metric,
  "total": (number) sum of the amounts of events recorded for this metric,
  "mean_rate": (number) average rate,
  "m1_rate": (number) one-minute average rate,
  "m5_rate": (number) five-minute average rate,
  "m15_rate": (number) fifteen-minute average rate
}