histogram
Returns all histogram bin records associated with the named experiment, or an empty list if the experiment is not found or has no histogram data.
The join is: experiment → simulation_run (via SimulationRunTableData.exp_id_fk) → histogram (via HistogramTableData.sim_run_id_fk).
Return
the matching HistogramTableData records; empty if none exist
Parameters
exp
the experiment name whose histogram data is requested