MX - Monitor NAAQS Exclusion
----------------------------

The purpose of this transaction is to enable a monitor to be categorized as non-regulatory, i.e. have its data excluded from NAAQS calculations performed by AQS. 

Previously, this tagging ability was implemented via a Monitor Type code of "NON-REGULATORY" (and prior to that, of "SPECIAL PURPOSE"). Monitor types have been revised, and now only the Monitor Exclusions indicator is used to determine if data from a monitor is to be excluded from regulatory data summaries.

Examples:

.. code-block:: text
   :caption: MX transaction in default mode

   MX|I|06|105|0002|88101|1||20110818|20130806|Special Purpose Monitor, 24 months

.. code-block:: text
   :caption: MX transaction in Tribal mode

   MX|I|TT|434|0007|11101|1||20051224|20070430|




Format
^^^^^^

.. list-table:: MX - Monitor NAAQS Exclusion transaction format
   :widths: 1 5 15 4 3 1
   :header-rows: 1


   * - Seq.
     - Name
     - Description
     - Formatting Rules
     - Required
     - Key
   * - 1
     - `Transaction Type <Transaction%20Type.html>`_
     - Monitor NAAQS Exclusion transaction identifier.
     - Must = MX
     - Always
     - 
   * - 2
     - `Action Indicator <Action%20Indicator%20for%20Transaction.html>`_
     - Indicator for Insert, Update, or Delete action.
     - Must = I, U, or D
     - Always
     - 
   * - 3
     - `State Code / Tribal Indicator <State%20Code.html>`_
     - The FIPS state code of the monitor, or "TT" to indicate that the next field on the transaction is a Tribal code.
     - Must exist in STATES Reference Table or be 'TT' for Tribal Site
     - Always
     - Y
   * - 4
     - `County Code / Tribal Code <County%20Code.html>`_
     - The FIPS County Code of the site.  If the previous field on the transaction contains "TT", then the Tribal Code of the site.
     - Must exist in COUNTIES (for state) or TRIBAL_AREAS Reference table
     - Always
     - Y
   * - 5
     - `Site Number <Site%20Number.html>`_
     - Four digit number to uniquely identify site in county and/or tribe.
     - Must exist in SITES table with {State Code, county Code} or Tribal Code
     - Always
     - Y
   * - 6
     - `Parameter Code <Parameter%20Code.html>`_
     - The AQS parameter code assigned to the monitor in AQS.
     - Must exist in PARAMETERS reference table.
     - Always
     - Y
   * - 7
     - `POC <POC.html>`_
     - Parameter Occurrence Code:  One or two digit number identifying a specific monitor for a parameter at the site.  
     - Must exist in MONITOR table for non-Insert actions.
     - Always
     - Y
   * - 8
     - `Pollutant Standard ID <Exclusion%20Standard%20ID.html>`_
     - AQS Code for the specific NAAQS standard from which to exclude this monitor's data from design value calculations.  Null means exclude from all standards.
     - Integer.  Must exist in POLLUTANT_PERIOD_STANDARDS Reference Table.
     - No
     - 
   * - 9
     - `Begin Date <Begin%20Date.html>`_
     - Beginning of date range where the monitor is the primary for the parameter at the site.
     - YYYYMMDD.
     - Always
     - Y
   * - 10
     - `End Date <End%20Date.html>`_
     - End of date range where the monitor the primary for the parameter at the site.
     - YYYYMMDD.
     - No
     - 
   * - 11
     - `Comment <Comment.html>`_
     - Justification for NAAQS exclusion.
     - Text, up to 2000 characters.
     - Insert
     -