within the interval, <replaceable>latency_sum</replaceable> is a sum of latencies

(so you can compute average latency easily). The following two fields are useful

for variance estimation - <replaceable>latency_sum</> is a sum of latencies and

<replaceable>latency_2_sum</> is a sum of 2nd powers of latencies. Thelast two

<replaceable>latency_2_sum</> is a sum of 2nd powers of latencies. Thenext two

fields are <replaceable>min_latency</> - a minimum latency within the interval, and

<replaceable>max_latency</> - maximum latency within the interval. A transaction is

counted into the interval when it was committed. The fields in the end,