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OMNI Data Set
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OMNI Online Data Set Selector

OMNI data format description can be found here .

Data are available from 1963-11-2 (Year 1963, Day 306) to 2000-04-30(Year 2000, Day 120) .


Start Date
Year(YYYY): ,Day of the Year(DDD): ,Hour:
End Date
Year(YYYY): ,Day of the Year(DDD): ,Hour:
Flag 1  IMF and Plasma data, same spacecraft
2  IMF and Plasma data, different spacecraft
3  No Plasma data 
4  No IMF data
5  No IMF or Plasma data 
Bartels rotation number
ID for IMF spacecraft
ID for SW plasma spacecraft
# of points in the IMF averages
# of points in the plasma averages
Field Magnitude Average |B| 1/N SUM |B|, nT
Magnitude of Average Field Vector sqrt(Bx^2+By^2+Bz^2)
Lat.Angle of Aver. Field Vector Degrees (GSE coords)
Long.Angle of Aver.Field Vector Degrees (GSE coords)
Bx GSE, GSM nT
By GSE nT
Bz GSE nT
By GSM nT
Bz GSM nT
sigma|B| RMS Standard Deviation in average
magnitude (word 10), nT
sigma B RMS Standard Deviation in field
vector, nT (**)
sigma Bx RMS Standard Deviation in GSE
X-component average, nT (*)
sigma By RMS Standard Deviation in GSE
Y-component average, nT (*)
sigma Bz RMS Standard Deviation in GSE
Z-component average, nT (*)
Plasma temperature Degrees, K
Ion Density N/cm^3
Plasma (Bulk) speed km/s
Plasma (Bulk) Flow Long. Angle Degrees, GSE*, i.e.
positive from from -X to Y or positive
flow from the west limb of the Sun
Plasma (Bulk) Flow Lat. Angle Degrees, GSE, 
positive to the northern heliosphere
sigma T Degrees, K
sigma N N/cm^3
sigma V km/s
sigma phi V Degrees
sigma theta V Degrees
Kp Planetary Geomagnetic Activity Index
(e.g. 3+ = 33, 6- = 57, 4 = 40, etc.)
C9 Geomagnetic activity index (0 to 9)
R Sunspot number
DST Index nT
Proton flux number/cmsq sec sr >1 Mev
Proton flux number/cmsq sec sr >2 Mev
Proton flux number/cmsq sec sr >4 Mev
Proton flux number/cmsq sec sr >10 Mev
Proton flux number/cmsq sec sr >30 Mev
Proton flux number/cmsq sec sr >60 Mev
Flux Flag (-1,0,1,2,3,4,5,6)

Access to OMNI-2 data
Acknowledgments:
  • This page was created with kind help of Dr. Joseph H. King, NASA/NSSDC, who supplied OMNI and COHO data.

  • Copyright © 1999, 2002 Laboratory of Computational Mathematics,
    Skobeltsyn Institute of Nuclear Physics,
    Moscow State University