+
+ The return values describe performance at the relevant lower bound
+ as "conditional throughput", which is based on loss ratio of one of trials
+ selected as a quantile based on exceed ratio parameter.
+ Usually this value may be quite pessimistic, as MLRsearch stops
+ measuring a load as soon as it becomes a lower bound,
+ so conditional throughput is usually based on forwarding rate
+ of the worst on the good long trials.