VTORTHO_0_3M_PAN_2016
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: VT Center for Geographic Information
- Publication_Date: 20170308
- Title: VTORTHO_0_3M_PAN_2016
- Edition: 2016A
- Geospatial_Data_Presentation_Form: remote-sensing image
- Series_Information:
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- Series_Name: Vermont 2016 Orthoimagery - 30-centimeter
- Issue_Identification: 2016A
- Publication_Information:
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- Publication_Place: Montpelier VT 05620-2001
- Publisher: VT Center for Geographic Information
- Other_Citation_Details: Tile Structure - 1800m X 1800m
- Description:
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- Abstract:
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This metadata record describes the acquisition and production of greyscale digital ground orthoimagery covering a portion of Vermont State. The digital orthophotography and color infrared digital orthos are composed of 8 bit greyscale digital orthos with a 0.3 meter pixel resolution. Geographic extent includes partial coverage of Rutland and Windsor Counties in central Vermont, approximately 1,916.5 total square miles.
Dataset Description: The Vermont 2016 Imagery project called for the planning, acquisition, processing and derivative products of imagery data to be collected at an ground sample distance of 15 centimeters. Project specifications are based on the ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014). The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane Coordinate System Vermont, meters and vertical datum of NAVD1988 (Geoid 12A), meters. Raw imagery data was produced in 16-bit 4-band (RGB-IR) uncompressed format, then processed to create 24-bit 4-band (RGB-IR) orthorectified tiles. Uncompressed GeoTIFF and compressed JPEG 2000 data was produced in black and white. A total of 1,532 tiles were produced with a tile size of 1,800-meters x 1,800 meters. Tile names use the following naming convention "VT_(TILENUM)_(YYYYMMDD).(FileExtension), where TILENUM = the 6-digit value of the TILENUM attribute in the master index files and YYYYMMDD = the flight acquisition date (or majority date) for that particular tile.
Ground Conditions: Imagery was collected in spring of 2016 during minimal shadow conditions. In order to post process the imagery data to meet task order specifications, Quantum Spatial utilized 38 checkpoints provided by the State of Vermont. These checkpoints were established throughout the project area and used to check the accuracy of the data.
- Purpose:
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The acquisition, production, and delivery of greyscale digital orthoimagery covering the project area was a coordinated effort between Quantum Spatial, Inc. and the Vermont Center for Geographic Information (VCGI). This data was collected as part of a 5-year project issued by the State of Vermont to collect imagery covering approximately 20% of the state over a period of five consecutive leaf-off Spring seasons. This data depicts geographic features on the surface of the earth.
- Supplemental_Information:
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Tile ID: n/a
Project Name: Vermont 2016 Imagery Project
Location: Rutland and Windsor Counties. Please see the bounding coordinates for tile location.
Ground Sample Distance: 30cm
Output format: TIFs and SIDs
Output media: Hard drive
Spectrum: 4 separate, distinct bands (red, blue green, and near infrared)
Output: Raw images are stored in strips which are processed into TIFs which are then seamed into mosaics. Final mosaics are compressed to SIDs.
Contractor: Quantum Spatial, Inc.
Project acquisition dates and times (also contained in the source information section of the metadata):
Lift 20160413-A_N910FC_SN10547 was flown April 13, 2016 with AC90 N910FC and ADS100 Serial Number 10547 from 16:44:42 to 20:35:11 local time.
Lift 20160414-A_N910FC_SN10547 was flown April 14, 2016 with AC90 N910FC and ADS100 Serial Number 10547 from 13:10:56 to 16:13:39 local time.
Dector types and manufacturer: Leica ADS 100 push broom sensor
Spacing between CCD detectors (in micrometers): n/a
Array Size: 20,000-pixels
Nominal ground swath of the detector: 6,000m
Spectral sensitivity of the detector (in nanometers):
Red 619-651
Green 525-585
Blue 435-495
Near Infrared 808-882
Filters used (if any): none
Scene to scene edge-matching accuracy (in pixels): Offsets greater than 5 pixels were edited.
Band to band registration accuracy (in pixels): Please see individual camera calibration reports included in the final report.
Horizontal accuracy (in units; also contained in the Horizontal Positional Accuracy Value of the metadata): 0.313 meters RMSEr
Horizontal Datum (also contained in the Horizontal Datum Name of the metadata): North American Datum of 1983 (2011)
Vertical Datum: none
Imaging Processing Description (also contained in the process step of the metadata):
Data processing of ADS100 imagery and metadata is a streamlined digital workflow process utilizing Quantum Spatial Inc.'s proprietary software and commercial softcopy photogrammetric software including XPro, Inertial Explorer and Orthovista. The ADS100 sensor GPS/IMU position and attitude data is directly processed through three separate but continuous steps: Inertial Explorer for data extracting, data analysis, and data measurement. The post-processed GPS data output is displayed onto the flight profile plot, which clearly shows the RMS values of the combined separation, C/A Code and Carrier Phase. The output GPS/IMU data is also verified by a PDOP plot and PDOP values are compared to an acceptable threshold range.
The processing on ADS100 images is based on XPro software using ORIMA for bundle adjustment. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an autocorrelation algorithm. A least squares bundle adjustment of image pass points and the ABGPS was performed to develop an aerotriangulation solution for each block using XPro Triangulation software. Upon final bundle adjustment, the triangulated strips were ortho-rectified to the DEM. Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data.
Orthorectified imagery is checked and radiometrically balanced in a parallel process that utilizes custom gradient correction software and the INPHO Orthovista Radiometrics editor. Once both processes have passed rigid AT and QC milestones, the imagery bands, red, green, blue, and near infrared are rectified to a 4-Band RGBN product. These orthos are passed to the mosaic team for QC, seam line placement and tiling using the interactive capabilities of Orthovista software. Following the application of seamline and final tonal adjustment, the orthoimagery is cut to a custom tiling index.
- Time_Period_of_Content:
-
- Time_Period_Information:
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- Multiple_Dates/Times:
-
- Single_Date/Time:
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- Calendar_Date: 20160413
- Single_Date/Time:
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- Calendar_Date: 20160414
- Currentness_Reference: Ground Conditions
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: Every five years
- Spatial_Domain:
-
- Bounding_Coordinates:
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- West_Bounding_Coordinate: -73.4482966455979
- East_Bounding_Coordinate: -72.1756583686292
- North_Bounding_Coordinate: 43.8016267191077
- South_Bounding_Coordinate: 43.2344998660646
- Keywords:
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- Theme:
-
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: 30 centimeter orthoimage
- Theme_Keyword: 30 cm orthoimage
- Theme_Keyword: 0.3 meter orthoimage
- Theme_Keyword: 0.3 m orthoimage
- Theme_Keyword: rectified photograph
- Theme_Keyword: rectified image
- Theme_Keyword: orthophoto
- Theme_Keyword: four band orthophoto
- Theme_Keyword: orthoimage
- Theme_Keyword: image map
- Place:
-
- Place_Keyword_Thesaurus:
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U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
- Place_Keyword: US
- Place:
-
- Place_Keyword_Thesaurus:
-
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National Institute of Standards and Technology.
- Place_Keyword: GA
- Place:
-
- Place_Keyword_Thesaurus: None
- Place_Keyword: United States
- Place_Keyword: US
- Place_Keyword: Vermont
- Place_Keyword: VT
- Place_Keyword: Rutland County
- Place_Keyword: Windsor County
- Access_Constraints:
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VCGI and the State of VT make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
- Use_Constraints: None.
- Point_of_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
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- Contact_Organization: VT Center for Geographic Information
- Contact_Address:
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- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Contact_Electronic_Mail_Address: vcgi@vermont.gov
- Hours_of_Service: 9am - 5pm, M-F
- Data_Set_Credit: Vermont Imagery Program (VIP)
- Security_Information:
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- Security_Classification_System: N/A
- Security_Classification: Unclassified
- Security_Handling_Description: No Security Considerations
- Native_Data_Set_Environment: ESRI ArcGIS
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Radiometry is verified by visual inspection of the digital orthophoto. Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching.
- Logical_Consistency_Report:
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All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Seamline mismatches are not corrected unless the overall displacement exceeds one foot.
- Completeness_Report:
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Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free. Photography was flown during leaf-off in deciduous vegetation regions. The data was clipped to the area of interest.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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The accuracy is designed to meet or exceed American Society for Photogrammetry and Remote Sensing Accuracy's Positional Accuracy Standards for Digital Geospatial Data (2014). The computed RMSEx and RMSEy will be less than 2 pixels.
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
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- Horizontal_Positional_Accuracy_Value: 0.313
- Horizontal_Positional_Accuracy_Explanation: RMSEr in feet
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: Quantum Spatial
- Publication_Date: 2016
- Title: Aerial Imagery
- Geospatial_Data_Presentation_Form: remote-sensing image
- Type_of_Source_Media: hard drive
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
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- Beginning_Date: 20160413
- Beginning_Time: 164442
- Ending_Date: 20160413
- Ending_Time: 203511
- Source_Currentness_Reference: ground condition
- Source_Citation_Abbreviation: AIRPHOTO
- Source_Contribution:
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New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial numbers 10547 and 10529). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with Rockwell Turbo Commander 690C, twin-turboprop (Tail Numbers: N910FC) at approximately 3,672 meters above ground level (AGL), acquiring a pixel resolution of 30 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: Quantum Spatial
- Publication_Date: 2016
- Title: Aerial Imagery
- Geospatial_Data_Presentation_Form: remote-sensing image
- Type_of_Source_Media: hard drive
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Range_of_Dates/Times:
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- Beginning_Date: 20160414
- Beginning_Time: 131056
- Ending_Date: 20160414
- Ending_Time: 161339
- Source_Currentness_Reference: ground condition
- Source_Citation_Abbreviation: AIRPHOTO
- Source_Contribution:
-
New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial numbers 10547 and 10529). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with Rockwell Turbo Commander 690C, twin-turboprop (Tail Numbers: N910FC) at approximately 3,672 meters above ground level (AGL), acquiring a pixel resolution of 30 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: Quantum Spatial, Inc.
- Publication_Date: 2016
- Title: Digital Elevation Model
- Geospatial_Data_Presentation_Form: raster digital data
- Type_of_Source_Media: disc
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 2016
- Source_Currentness_Reference: ground condition
- Source_Citation_Abbreviation: DEM
- Source_Contribution:
-
Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data.
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator: State of Vermont
- Publication_Date: 2016
- Title: Photo Checkpoints
- Geospatial_Data_Presentation_Form: Vector digital data
- Type_of_Source_Media: online
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: Unknown
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: CONTROL
- Source_Contribution:
-
These control points were used to verify the accuracy of the orthophotos.
- Process_Step:
-
- Process_Description:
-
Data processing of ADS100 imagery and metadata is a streamlined digital workflow process utilizing Quantum Spatial Inc.'s proprietary software and commercial softcopy photogrammetric software including XPro, Inertial Explorer and Orthovista. The ADS100 sensor GPS/IMU position and attitude data is directly processed through three separate but continuous steps: Inertial Explorer for data extracting, data analysis, and data measurement. The post-processed GPS data output is displayed onto the flight profile plot, which clearly shows the RMS values of the combined separation, C/A Code and Carrier Phase. The output GPS/IMU data is also verified by a PDOP plot and PDOP values are compared to an acceptable threshold range.
The processing on ADS100 images is based on XPro software using ORIMA for bundle adjustment. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an autocorrelation algorithm. A least squares bundle adjustment of image pass points and the ABGPS was performed to develop an aerotriangulation solution for each block using XPro Triangulation software. Upon final bundle adjustment, the triangulated strips were ortho-rectified to the DEM. Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data.
Orthorectified imagery is checked and radiometrically balanced in a parallel process that utilizes custom gradient correction software and the INPHO Orthovista Radiometrics editor. Once both processes have passed rigid AT and QC milestones, the imagery bands, red, green, blue, and near infrared are rectified to a 4-Band RGBN product. These orthos are passed to the mosaic team for QC, seam line placement and tiling using the interactive capabilities of Orthovista software. Following the application of seamline and final tonal adjustment, the orthoimagery is cut to a custom tiling index. An additional set of orthoimagery was produced in black and white. Compressed imagery was produced in JPEG format for the 4-band and black and white imagery.
- Process_Date: 2016
- Process_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Quantum Spatial
- Contact_Person: Sarah Zibart
- Contact_Address:
-
- Address_Type: mailing and physical
- Address: 523 Wellington Way
- City: Lexington
- State_or_Province: KY
- Postal_Code: 40503
- Country: USA
- Contact_Voice_Telephone: 859-277-8700
- Contact_Facsimile_Telephone: 859-277-8901
- Contact_Electronic_Mail_Address: szibart@quantumspatial.com
- Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)
- Contact_Instructions:
-
If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.
- Spatial_Data_Organization_Information:
-
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
-
- Raster_Object_Type: pixel
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Grid_Coordinate_System:
-
- Grid_Coordinate_System_Name: State Plane Coordinate System 1983
- State_Plane_Coordinate_System:
-
- SPCS_Zone_Identifier: 4400
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian: 0.999964285714286
- Longitude_of_Central_Meridian: -72.5
- Latitude_of_Projection_Origin: 42.5
- False_Easting: 500000.0
- False_Northing: 0.0
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
-
- Abscissa_Resolution: 0.3
- Ordinate_Resolution: 0.3
- Planar_Distance_Units: meter
- Geodetic_Model:
-
- Horizontal_Datum_Name: North American Datum of 1983 (2011)
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257222101
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: VT Center for Geographic Information
- Contact_Address:
-
- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Contact_Electronic_Mail_Address: vcgi@vermont.gov
- Hours_of_Service: 9am - 5pm, M-F
- Resource_Description: VTORTHO_0_3M_PAN_2016
- Distribution_Liability:
-
VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
- Standard_Order_Process:
-
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: JPEG2000 and GeoTIFF
- Format_Specification: JPEG2000 (20x compression) and GeoTIFF
- Format_Information_Content: geospatial data
- File_Decompression_Technique: Image viewer
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
https://maps.vcgi.vermont.gov/gisdata/vcgi/imagery/VTORTHO/0_3M/PAN/2016/COMP/
- Access_Instructions:
-
Download compressed (JPEG2000) from web site. Uncompressed
GeoTIFF available on offline media.
- Offline_Option:
-
- Offline_Media: USB drive
- Fees:
-
No charge when downloading compressed (JPEG2000) from the internet, and when no custom processing is required.
Charge for offline media options (uncompressed GeoTIFF).
- Ordering_Instructions: Send an email describing data request to vcgi@vermont.gov
- Turnaround: About 5 days.
- Custom_Order_Process: Send an email describing data request to vcgi@vermont.gov
- Technical_Prerequisites: GIS Software
- Available_Time_Period:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 20170308
- Metadata_Reference_Information:
-
- Metadata_Date: 20170308
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: VT Center for Geographic Information
- Contact_Person: GIS Database Administrator
- Contact_Address:
-
- Address_Type: Mailing and Physical Address
- Address: 1 National Life Dr, Dewey Building, 2nd Floor
- City: Montpelier
- State_or_Province: VT
- Postal_Code: 05620-2001
- Country: USA
- Contact_Voice_Telephone: (802) 585-0820
- Contact_TDD/TTY_Telephone: None
- Contact_Facsimile_Telephone:
- Metadata_Standard_Name: FGDC Content Standards for Digital Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: Local time
- Metadata_Access_Constraints: None
- Metadata_Use_Constraints: None
- Metadata_Security_Information:
-
- Metadata_Security_Classification_System: N/A
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: No security considerations
Generated by mp version 2.9.22 on Thu Aug 25 20:52:24 2022