Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Ionospheric Values (Daily Work Sheets), F-Plots, Tabulations, Booklets, Catalogs, and Log Books

Metadata Updated: November 12, 2020

These ionospheric data consist of scaling notes, equipment usage logs, and ionospheric values in the form of daily work sheets, F-Plots, tabulations, and booklets. The station notes list the equipment used, power settings, frequencies used, equipment problems, and other information about the equipment. The daily work sheets, commonly referred to an 7E's, are the paper forms used for recording the scaled values values of the ionospheric parameters. Tabulations and booklets contain the published values by ionospheric parameter. If publication errors arise or are suspected, the daily work sheets are usually consulted, if they are available.These data are available from the NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) as electrostatic copies and some as imaged files. Most of the data are in the form of daily work sheets, tabulations, and booklets. The booklets and tabulations have each ionospheric parameter listed on one or two pages, depending upon the format. The daily work sheets have one day (24 hours) of scaled ionospheric parameters on each sheet.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.


Metadata Date September 18, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1984 (publication)
Frequency Of Update monthly

Metadata Source

Harvested from NGDC STP Ionosonde

Additional Metadata

Resource Type Dataset
Metadata Date September 18, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1984 (publication)
Responsible Party Unknown
Contact Email
Guid gov.noaa.ngdc.stp.ionosonde:G00556
Access Constraints Use Constraints: None, Access Constraints: No Constraints
Bbox East Long 180.000000
Bbox North Lat 90.000000
Bbox South Lat -90.000000
Bbox West Long -180.000000
Coupled Resource
Frequency Of Update monthly
Harvest Object Id 422e2379-d2d5-4e38-bee3-6361ea69b406
Harvest Source Id 9e78f6bc-78d6-4bc1-b987-e86ecff1598d
Harvest Source Title NGDC STP Ionosonde
Licence While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function an a particular system. NOAA makes no warranty, expressed or implied, or does the fact of distribution constitute such a warranty.
Metadata Language eng; USA
Metadata Type geospatial
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1944-03-01

Didn't find what you're looking for? Suggest a dataset here.