Check a period's DMR values against the permit's own limits

A US NPDES permit's Discharge Monitoring Report for one period, checked before it is filed: each value you send (outfall, parameter, statistic, value, unit) is set beside the permit's own limit for that period, from EPA's national limits file (ICIS-NPDES), with EPA's violation rule's verdict: flagged (EPA records a violation), ok, undecidable (a less-than result against a lower limit: EPA does not flag it, nor does it show compliance), no_data (a NODI code), not_graded (an alert or stayed limit), unreadable. A row we cannot place on one value due is refused by its code (outfall.not_in_permit, parameter.not_limited, statistic.not_limited, unit.not_on_form, period.not_due, row.ambiguous with the candidates), never put on the nearest limit. Every value due this period is in limits once with its limit_value_id (the cite into EPA's file); not_sent lists those you did not send, which EPA records as missing (D90) when filed blank. headline and tally are the forms as filed with exactly the values placed. netdmr: true adds the NetDMR "Import DMRs" file as text (not yet validated by NetDMR's own import check). The values reach our server to be checked and are not kept: only how many were sent, flagged and refused is counted.