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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
FTPBrowser
Multi-Source Spectral Plot
Helios 2 E6 (Kunow) Hourly Particle Fluxes in ASCII Format
var authors='Kunow, Horst W.';
document.write(authors);
(2025).
Helios 2 E6 (Kunow) Hourly Particle Fluxes in ASCII Format.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/gb3b-6904. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/Helios2/E6/ParticleFlux/Kunow/ASCII/PT1H
Description
Data set records contain fluxes of protons in 5 energy
ranges (4-13, 13-27, 27-37, 37-51, >51 MeV), alpha particles in 6 energy ranges
(2-4, 4-13, 13-27, 27-37, 37-48, >48 MeV/n), and electrons in 2 ranges (0.3-0.8,
0.8-2.0 MeV). The fluxes are averaged over intervals of approximately one hour.
Each "data record" (having ending CR and/or LF) spans 4-5 hours and has 10
time-overlapping segments. Each segment has averaging start and stop times plus
words for 13 fluxes and words for the statistical uncertainties in the 13 fluxes.
However, most words in a given segment have fill values, such that good values
for a given flux (species and energy range) and its uncertainty appear only in
a minority of the segments. No spacecraft position information is included.
Data are from the E6 experiment on Helios 2.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/Helios2/E6/ParticleFlux/Kunow/ASCII/PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Helios 2 E6 (Kunow) Hourly Particle Fluxes in ASCII Format
DOI
https://doi.org/10.48322/gb3b-6904
ReleaseDate
2026-06-26 13:17:09Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:22Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:29:21Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:17:09Z
Note
Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
Description
Data set records contain fluxes of protons in 5 energy
ranges (4-13, 13-27, 27-37, 37-51, >51 MeV), alpha particles in 6 energy ranges
(2-4, 4-13, 13-27, 27-37, 37-48, >48 MeV/n), and electrons in 2 ranges (0.3-0.8,
0.8-2.0 MeV). The fluxes are averaged over intervals of approximately one hour.
Each "data record" (having ending CR and/or LF) spans 4-5 hours and has 10
time-overlapping segments. Each segment has averaging start and stop times plus
words for 13 fluxes and words for the statistical uncertainties in the 13 fluxes.
However, most words in a given segment have fill values, such that good values
for a given flux (species and energy range) and its uncertainty appear only in
a minority of the segments. No spacecraft position information is included.
Data are from the E6 experiment on Helios 2.
Acknowledgement
Please acknowledge the P.I., Horst Kunow at Universitat
Kiel
PublicationInfo
Authors
Kunow, Horst W.
PublicationDate
2025-11-14 16:02:22Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Horst.W.Kunow
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/helios/helios2/particle/e6_kunow/h-cr.txt
PriorIDs
spase://VEPO/NumericalData/Helios2/E6/PT1H
spase://VEPO/NumericalData/Helios2/E6/ParticleFlux/Kunow/ASCII/PT1H
spase://VSPO/NumericalData/Helios2/E6/ParticleFlux/Kunow/ASCII/PT1H
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/helios/helios2/particle/e6_kunow/
Description
In ASCII via FTP from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/helios/helios2/particle/e6_kunow/
Description
In ASCII via HTTP from SPDF
AccessURL
Name
FTPBrowser
URL
https://omniweb.gsfc.nasa.gov/ftpbrowser/helios2_e6_1hr.html
Description
Subset, plot, and/or list fluxes
AccessURL
Name
Multi-Source Spectral Plot
URL
https://omniweb.gsfc.nasa.gov/ftpbrowser/flux_spectr_m.html
Description
Spectral plots and power law fits for arbitrary durations.
Format
Text
DataExtent
Quantity
14
Units
MB
Acknowledgement
Please acknowledge the P.I., Horst Kunow at Universitat
Kiel and the Space Physics Data Facility at NASA/GSFC
InstrumentIDs
spase://SMWG/Instrument/Helios2/E6
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1976-01-16 00:00:00Z
StopDate
1980-03-08 00:00:00Z
Cadence
PT1H
ObservedRegion
Heliosphere.Inner
Parameter #1
Name
Start and stop times
Description
The start and stop times of the flux averages, each given
as four words: year, day of year, hour, minute
Cadence
PT1H
Structure
Size
4 2
Description
The start and stop times of the flux averages, each given
as four words: year, day of year, hour, minute. These are given in each of the
10 time segments for each data record
Support
SupportQuantity
Temporal
Parameter #2
Name
Proton fluxes and uncertainties
Description
Fluxes of protons in 5 energy ranges (4-13, 13-27, 27-37,
37-51, >51 MeV) and associated statistical uncertainties for each flux.
Cadence
PT1H
Units
Particles/m**2_sec_sr_MeV
Structure
Size
5 2
Description
Fluxes of protons in 5 energy ranges (4-13, 13-27, 27-37,
37-51, >51 MeV) and associated statistical uncertainties for each flux. These are
given in each of the 10 time segments for each data record. (See general description
above.)
FillValue
-0.99999E+04
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberFlux
EnergyRange
Low
4
High
51
Units
MeV
Parameter #3
Name
Alpha particle fluxes and uncertainties
Description
Fluxes of alpha particles in 6 energy ranges (2-4, 4-13, 13-27,
27-37, 37-48, >48 MeV/n) and associated statistical uncertainties for each flux.
Cadence
PT1H
Units
Particles/m**2_sec_sr_MeV/n
Structure
Size
6 2
Description
Fluxes of alpha particles in 6 energy ranges (2-4, 4-13, 13-27,
27-37, 37-48, >48 MeV/n) and associated statistical uncertainties for each flux.
These are given in each of the 10 time segments for each data record. (See general
description above.)
FillValue
-0.99999E+04
Particle
ParticleType
AlphaParticle
Qualifier
Average
ParticleQuantity
NumberFlux
EnergyRange
Low
2
High
48
Units
MeV/n
Parameter #4
Name
Electron fluxes and uncertainties
Description
Fluxes of electrons in 2 energy ranges (0.3-0.8, 0.8-2.0 MeV)
and associated statistical uncertainties for each flux.
Cadence
PT1H
Units
Particles/m**2_sec_sr_MeV
Structure
Size
2 2
Description
Fluxes of electrons in 2 energy ranges (0.3-0.8, 0.8-2.0 MeV)
and associated statistical uncertainties for each flux. These are given in each
of the 10 time segments for each data record. (See general description above.)
FillValue
-0.99999E+04
Particle
ParticleType
Electron
Qualifier
Average
ParticleQuantity
NumberFlux
EnergyRange
Low
0.3
High
2.0
Units
MeV