<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1D00.sch" 
   schematypens="http://purl.oclc.org/dsdl/schematron"?>
<?xml-model href="https://pds.nasa.gov/pds4/mission/mvn/v1/PDS4_MVN_1D00_1110.sch"
   schematypens="http://purl.oclc.org/dsdl/schematron"?>
<Product_Bundle 
   xmlns="http://pds.nasa.gov/pds4/pds/v1"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:mvn="http://pds.nasa.gov/pds4/mission/mvn/v1"
   xsi:schemaLocation="
      http://pds.nasa.gov/pds4/pds/v1
      https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1D00.xsd

      http://pds.nasa.gov/pds4/mission/mvn/v1
      https://pds.nasa.gov/pds4/mission/mvn/v1/PDS4_MVN_1D00_1110.xsd
   ">
   <Identification_Area>
      <logical_identifier>urn:nasa:pds:maven.anc</logical_identifier>
      <version_id>2.25</version_id>
      <title>MAVEN Ancillary Bundle</title>
      <information_model_version>1.13.0.0</information_model_version>
      <product_class>Product_Bundle</product_class>
      <Citation_Information>
         <author_list>Harter, B.</author_list>
         <publication_year>2026</publication_year>
         <doi>10.17189/1414170</doi>
         <keyword>DRF</keyword>
         <description>
            This bundle contains products associated with the PDS MAVEN
            Ancillary data archive.
         </description>
      </Citation_Information>
      <Modification_History>
         <Modification_Detail>
            <modification_date>2026-06-22</modification_date>
            <version_id>2.25</version_id>
            <description>
               MAVEN Release 45. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2025-11-20 to 2025-12-06, and 2025-11-15 to 2025-12-05 for
               the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2026-02-13</modification_date>
            <version_id>2.24</version_id>
            <description>
               MAVEN Release 44. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2025-08-18 to 2025-11-19 for the DRF files and 2025-08-15 to
               2025-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2025-11-14</modification_date>
            <version_id>2.23</version_id>
            <description>
               MAVEN Release 43. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2025-05-16 to 2025-08-20 for the DRF files and 2025-05-15 to
               2025-08-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2025-08-15</modification_date>
            <version_id>2.22</version_id>
            <description>
               MAVEN Release 42. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2025-02-17 to 2025-05-18 for the DRF files and 2025-02-15 to 
               2025-05-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2025-05-15</modification_date>
            <version_id>2.21</version_id>
            <description>
               MAVEN Release 41. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2024-11-18 to 2025-02-14 for the DRF files and 2024-11-15 to 
               2025-02-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2025-02-14</modification_date>
            <version_id>2.20</version_id>
            <description>
               MAVEN Release 40. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2024-08-16 to 2024-11-15 for the DRF files, 2024-08-15 to 
               2024-11-14 for the event lists, and 2024-08-16 to 2024-10-28
               for IMU.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-12-09</modification_date>
            <version_id>2.19</version_id>
            <description>
               The pds4 labels for the event products were updated to modify
               the schema location listed in the labels.  The The data products 
               themselves were not changed.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-11-15</modification_date>
            <version_id>2.18</version_id>
            <description>
               MAVEN Release 39. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2024-05-17 to 2024-08-16 for the DRF files, 2024-05-15 
               - 2024-08-14 for the event lists, and 2024-08-05 to 2024-08-09
               for IMU.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-08-23</modification_date>
            <version_id>2.17</version_id>
            <description>
               Part of MAVEN Release 38. Includes an incremental release of MAVEN
               ancillary IMU data, extending total coverage from 
               2024-04-01 to 2024-05-10.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-08-15</modification_date>
            <version_id>2.16</version_id>
            <description>
               MAVEN Release 38. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2024-02-16 to 2024-05-13 for the DRF files and 2024-02-15 
               - 2024-05-15 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-05-15</modification_date>
            <version_id>2.15</version_id>
            <description>
               MAVEN Release 37. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2023-11-23 to 2024-02-16 for the DRF files, 2023-11-15 
               to 2024-02-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2024-02-15</modification_date>
            <version_id>2.14</version_id>
            <description>
               MAVEN Release 36. Includes an incremental release of MAVEN
               ancillary DRF data, extending total coverage from 
               2023-08-18 to 2023-11-15 for the DRF files.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2023-11-17</modification_date>
            <version_id>2.13</version_id>
            <description>
               MAVEN Release 35. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2023-08-17 for DRF files,
               2014-11-16 to 2023-07-28 for IMU files, and 2014-11-18 to 2023-08-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2023-08-15</modification_date>
            <version_id>2.12</version_id>
            <description>
               MAVEN Release 34. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2023-05-18 for DRF files,
               2014-11-16 to 2023-04-07 for IMU files, and 2014-11-18 to 2023-05-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2023-05-15</modification_date>
            <version_id>2.11</version_id>
            <description>
               MAVEN Release 33. Includes an incremental release of MAVEN ancillary DRF and 
               event list data, extending total coverage from 2014-11-15 to 2023-02-17 for 
               DRF files and from 2014-11-18 to 2023-02-15 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2023-02-15</modification_date>
            <version_id>2.10</version_id>
            <description>
               MAVEN Release 32. Includes an incremental release of MAVEN ancillary DRF and
               event list data, extending total coverage from 2014-11-15 to 2022-11-18 for
               DRF files and from 2014-11-18 to 2022-11-15 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2022-11-19</modification_date>
            <version_id>2.9</version_id>
            <description>
               MAVEN Release 31. Includes an incremental release of MAVEN ancillary DRF, IMU, and
               event list data, extending total coverage from 2014-11-15 to 2022-08-18 for DRF
               files, 2014-11-18 to 2022-08-12 for IMU files, and 2013-11-14 to 2022-08-15 for the
               event lists. The DRF files *22_133_137.drf for 2022 were updated in this release.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2022-08-15</modification_date>
            <version_id>2.8</version_id>
            <description>
               MAVEN Release 30. Includes an incremental release of MAVEN ancillary DRF, IMU, and
               event list data, extending total coverage from 2014-11-15 to 2022-05-13 for DRF
               files, 2014-11-18 to 2022-03-25 for IMU files, and 2013-11-14 to 2022-05-14 for the
               event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2022-02-22</modification_date>
            <version_id>2.7</version_id>
            <description>
               MAVEN Release 29. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2022-02-25 for DRF 
               files, 2014-11-18 to 2022-02-25 for IMU files, and 2013-11-14 to 2022-02-22 for the 
               event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2022-02-15</modification_date>
            <version_id>2.6</version_id>
            <description>
               MAVEN Release 28. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2021-11-19 for DRF 
               files, 2014-11-18 to 2021-09-10 for IMU files, and 2013-11-14 to 2021-11-15 for the 
               event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2021-11-16</modification_date>
            <version_id>2.5</version_id>
            <description>
               MAVEN Release 27. Includes an incremental release of MAVEN ancillary DRF, IMU, and
               event list data, extending total coverage from 2014-11-15 to 2021-08-16 for DRF
               files, 2014-11-18 to 2021-08-17 for IMU files, and 2013-11-14 to 2021-08-15 for the
               event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2021-08-13</modification_date>
            <version_id>2.4</version_id>
            <description>
               MAVEN Release 26. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2021-05-18 for DRF 
               files, 2014-11-18 to 2021-05-18 for IMU files, and 2013-11-14 to 2021-05-14 for the 
               event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2021-05-15</modification_date>
            <version_id>2.3</version_id>
            <description>
               MAVEN Release 25. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2021-02-16 for DRF 
               files, 2014-11-18 to 2021-02-16 for IMU files, and 2013-11-14 to 2021-02-14 for 
               the event lists. In this release, the previous event list data files were replaced 
               by two new files, each covering the entire time period of the data.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2021-03-02</modification_date>
            <version_id>2.2</version_id>
            <description>
               MAVEN Release 24. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2020-11-18 for DRF 
               files, 2014-11-18 to 2020-11-18 for IMU files, and 2013-11-14 to 2020-11-14 for 
               the event lists. In this release, the previous event list data files were replaced 
               by two new files, each covering the entire time period of the data.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2020-11-12</modification_date>
            <version_id>2.1</version_id>
            <description>
               MAVEN Release 23. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2020-08-18 for DRF 
               files, 2014-11-18 to 2020-08-18 for IMU files, and 2013-12-03 to 2020-08-14 for 
               the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2020-09-16</modification_date>
            <version_id>2.0</version_id>
            <description>
               MAVEN Release 22. This includes a full re-release of the DRF and IMU data. The DRF 
               files have been reprocessed to remove records at the beginning of the data which 
               contain blank data values, truncated records at the end of the files, and correct 
               errors in the header records. These changes resulted in the removal of all data 
               records in some files. In these cases the data files themselves were removed. The 
               IMU files have been updated to remove extra header records. The event list labels 
               were also updated, but the data are unchanged. Total coverage for DRF files is 
               2014-11-15 to 2020-05-18. IMU file coverage is 2014-11-18 to 2020-05-18. Event list 
               coverage is 2013-12-03 to 2020-05-14.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2020-05-21</modification_date>
            <version_id>1.20</version_id>
            <description>
               MAVEN Release 21. Includes an incremental release of MAVEN ancillary DRF, IMU, and 
               event list data, extending total coverage from 2014-11-15 to 2020-02-18 for DRF 
               files, 2014-11-18 to 2020-02-18 for IMU files, and 2013-12-03 to 2020-02-14 for 
               the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2020-02-14</modification_date>
            <version_id>1.19</version_id>
            <description>
               MAVEN Release 20 (2020-02-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2019-11-18 for DRF files, 2014-11-18 to 2019-11-18 for IMU files, and 2013-12-03 
               to 2019-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2019-11-19</modification_date>
            <version_id>1.18</version_id>
            <description>
               MAVEN Release 19 (2019-11-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2019-08-19 for DRF files, 2014-11-18 to 2019-08-19 for IMU files, and 2013-12-03 
               to 2019-08-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2019-08-13</modification_date>
            <version_id>1.17</version_id>
            <description>
               MAVEN Release 18 (2019-05-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2019-05-20 for DRF files, 2014-11-18 to 2019-05-20 for IMU files, and 2013-12-03 
               to 2019-05-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2019-05-15</modification_date>
            <version_id>1.16</version_id>
            <description>
               MAVEN Release 17 (2019-05-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2019-02-18 for DRF files, 2014-11-18 to 2019-02-18 for IMU files, and 2013-12-03 
               to 2019-02-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2019-02-15</modification_date>
            <version_id>1.15</version_id>
            <description>
               MAVEN Release 16 (2019-02-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2018-10-19 for DRF files, 2014-11-18 to 2018-11-17 for IMU files, and 2013-12-03 
               to 2018-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2018-08-14</modification_date>
            <version_id>1.14</version_id>
            <description>
               MAVEN Release 14 (2018-08-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2018-05-21 for DRF files, 2014-11-18 to 2018-05-20 for IMU files, and 2013-12-03 
               to 2018-05-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2018-05-15</modification_date>
            <version_id>1.13</version_id>
            <description>
               MAVEN Release 12 (2018-02-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2017-11-20 for DRF files, 2014-11-18 to 2017-11-20 for IMU files, and 2013-12-03 
               to 2017-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2018-02-12</modification_date>
            <version_id>1.12</version_id>
            <description>
               MAVEN Release 12 (2018-02-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2017-11-20 for DRF files, 2014-11-18 to 2017-11-20 for IMU files, and 2013-12-03 
               to 2017-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2017-11-16</modification_date>
            <version_id>1.11</version_id>
            <description>
               MAVEN Release 11 (2017-11-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2017-08-21 for DRF files, 2014-11-18 to 2017-08-21 for IMU files, and 2013-12-03 
               to 2017-08-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2017-08-10</modification_date>
            <version_id>1.10</version_id>
            <description>
               MAVEN Release 10 (2017-08-15). Inclues an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2017-05-16 for DRF files, 2014-11-18 to 2017-05-16 for IMU files, and 2013-12-03 
               to 2017-05-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2017-05-14</modification_date>
            <version_id>1.9</version_id>
            <description>
               MAVEN Release 9 (2017-05-15). Includes an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2017-02-20 for DRF files, 2017-02-18 for IMU files, and 2013-12-03 to 2017-02-24 
               for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2017-02-13</modification_date>
            <version_id>1.8</version_id>
            <description>
               MAVEN Release 8 (2017-02-15). Includes an incremental release of MAVEN ancillary DRF, 
               and IMU data, and a full redelivery of the event list data, with events divided into 
               science and spacecraft operations event lists. Total coverage is from 2014-11-15 to
               2016-11-21 for DRF and IMU files, and 2013-12-03 to 2016-11-14 for the event lists.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2017-01-11</modification_date>
            <version_id>1.7</version_id>
            <description>
               MAVEN Release 7 (2016-11-15): Includes an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2016-08-16 for DRF and IMU files, and 2013-12-03 to 2016-08-15 for the event list.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2016-08-19</modification_date>
            <version_id>1.6</version_id>
            <description>
               MAVEN Release 6 (2016-08-19): Includes an incremental release of MAVEN ancillary 
               DRF, IMU, and event list data, extending total coverage from 2014-11-15 to
               2016-05-14 for DRF and IMU files, and 2013-12-03 to 2016-05-14 for the event list.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2016-05-27</modification_date>
            <version_id>1.5</version_id>
            <description>
               MAVEN Release 5. Includes an incremental release of MAVEN ancillary DRF, IMU, 
               and event list data, extending total coverage from 2014-11-15 to 2016-02-15 
               for DRF and IMU files, and 2013-12-03 to 2016-02-14 for the event list.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2016-04-08</modification_date>
            <version_id>1.4</version_id>
            <description>
               MAVEN Release 4 event list data.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2016-03-03</modification_date>
            <version_id>1.3</version_id>
            <description>
               MAVEN Release 4. Includes an incremental release of MAVEN ancillary
               DRF and IMU data, extending total coverage from 2014-11-15 to 2015-11-17.
            </description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2015-11-12</modification_date>
            <version_id>1.2</version_id>
            <description>MAVEN Release 3</description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2015-08-18</modification_date>
            <version_id>1.1</version_id>
            <description>MAVEN Release 2</description>
         </Modification_Detail>
         <Modification_Detail>
            <modification_date>2015-05-01</modification_date>
            <version_id>1.0</version_id>
            <description>MAVEN Release 1</description>
         </Modification_Detail>
      </Modification_History>
   </Identification_Area>
   <Context_Area>
      <Time_Coordinates>
         <start_date_time>2013-11-14T15:38:13Z</start_date_time>
         <stop_date_time>2025-12-06T01:26:20.451Z</stop_date_time>
      </Time_Coordinates>
      <Investigation_Area>
         <name>Mars Atmosphere and Volatile EvolutioN</name>
         <type>Mission</type>
         <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:investigation:mission.maven</lid_reference>
            <reference_type>bundle_to_investigation</reference_type>
         </Internal_Reference>
      </Investigation_Area> 
      <Observing_System>
         <Observing_System_Component>
            <name>Mars Atmosphere and Volatile Evolution (MAVEN)</name>
            <type>Spacecraft</type>   
            <Internal_Reference>
               <lid_reference>urn:nasa:pds:context:instrument_host:spacecraft.maven</lid_reference>
               <reference_type>is_instrument_host</reference_type>
            </Internal_Reference>
         </Observing_System_Component>
         <Observing_System_Component>
            <name>Imaging Ultraviolet Spectrograph</name>
            <type>Instrument</type>   
            <Internal_Reference>
               <lid_reference>urn:nasa:pds:context:instrument:iuvs.maven</lid_reference>
               <reference_type>is_instrument</reference_type>
            </Internal_Reference>
         </Observing_System_Component>
         <Observing_System_Component>
            <name>Neutral Gas and Ion Mass Spectrometer</name>
            <type>Instrument</type>   
            <Internal_Reference>
               <lid_reference>urn:nasa:pds:context:instrument:ngims.maven</lid_reference>
               <reference_type>is_instrument</reference_type>
            </Internal_Reference>
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         <Observing_System_Component>
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