Response Observed
@Serializable
@SerialName(value = "ResponseObserved" )
A statistical quantity was observed. Drives live bar charts and time-series plots. Covers Response, TWResponse, and Counter (the renderer does not need to distinguish which). For responses, the current within-replication statistics (count/average/min/max) are carried so a renderer can show a live summary without recomputing (decision D11); they are NaN for counters and any source without within-replication statistics.