A historical job status feed contains one top level entry for each job and multiple sub-entries for each job. The number of sub-entries to be included in the feed for each job is defined on the user profile - the "Select up to __ history records" parameter.
The sub-entries within each job entry are sorted in reverse chronological order and the most current run that appears first is also "highlighted".
Each entry in the historical job status feed is exactly the same as the entries in the current status feed - it contains: