Nawqaan 381

This is a crude first pass for this ticket.  I have lots of questions about the business rules for calculating the various values for plotting.  This pull request is intended to get an initial review for additional information and direction.
This is why the human-health benchmarks is no longer working. This should be the averageDataTimeRange. For these graphs we really only need the averageDateTimeRange which in the previous version of this file was called dataTimeRange which is in my opinion the current name since it's used to retrieve all data for this page.