Cite this as (APA format)
Heynderickx, D., Kruglanski, M. (2026). AZUR/EI-88: Medium-energy low-altitude trapped proton and alpha-particle data (1969-1970) (Version 1) [Data set]. Royal Belgian Institute for Space Aeronomy. https://doi.org/10.18758/40t59lob
Technical info
| Resource format | CSV |
|---|---|
| Resource size | 48.8 MB |
Additional info
| Data last updated | August 25, 2026 |
|---|---|
| Metadata last updated | August 27, 2026 |
| Created | August 25, 2026 |
Dataset AZUR/EI-88
The file includes 230,974 records and one header lines. Each record includes 35 fields:
cdf_epoch (column 01)
CDF Epoch, milliseconds since year 0 (proleptic Gregorian calendar with astronomical year numbering).
epoch (column 02)
Epoch in RFC3339 format.
quality (column 03)
Original data quality flag (0: good; 1: average; 2: bad).
position_gei_x, position_gei_y, position_gei_z (columns 04-06)
Satellite position in Geocentric Equatorial Inertial (GEI) Cartesian coordinates (x, y, z), in km.
b_meas_bx, b_meas_by, b_meas_bz (columns 07-09)
Measured magnetic field components (x,y,z), in Gauss.
fpdu_1_1.5-2.7, fpdu_1_2.7-5.2, fpdu_1_5.2-10.4, fpdu_1_10.4-22.0, fpdu_1_22.4-48.8, fpdu_1_48.8-104.0 (columns 10-15)
Differential directional proton fluxes measured by the telescope oriented perpendicular with respect to the local magnetic field vector, in cm⁻² s⁻¹ sr⁻¹ MeV⁻¹, for the six energy channels
- 1.5 - 2.7 MeV
- 2.7 - 5.2 MeV
- 5.2 - 10.4 MeV
- 10.4 - 22.0 MeV
- 22.4 - 48.8 MeV
- 48.8 - 104.0 MeV
fpdu_2_1.5-2.7, fpdu_2_2.7-5.2, fpdu_2_5.2-10.4, fpdu_2_10.4-22.0, fpdu_2_22.4-48.8, fpdu_2_48.8-104.0 (columns 16-21)
Differential directional proton fluxes measured by the telescope oriented at 45° with respect to the local magnetic field vector (in the northern hemisphere, the telescope pointed upwards), in cm⁻² s⁻¹ sr⁻¹ MeV⁻¹, for the six energy channels
- 1.5 - 2.7 MeV
- 2.7 - 5.2 MeV
- 5.2 - 10.4 MeV
- 10.4 - 22.0 MeV
- 22.4 - 48.8 MeV
- 48.8 - 104.0 MeV
fadu_1_6.0-19.0 (column 22)
Differential directional alpha flux measured by the 90° telescope, in cm⁻² s⁻¹ sr⁻¹ MeV⁻¹. Energy range: 6.0 - 19.0 MeV.
fadu_2_6.0-19.0 (column 23)
Differential directional alpha flux measured by the 45° telescope, in cm⁻² s⁻¹ sr⁻¹ MeV⁻¹. Energy range: 6.0 - 19.0 MeV.
UNILIB data (columns 24-35)
Magnetic field related coordinates computed with UNILIB for both telescopes using a combination of the International Geomagnetic Reference Field (IGRF) and the Olson & Pfitzer quiet external magnetic field.
unilib_bm_1,unilib_bm_2(columns 24-25): Magnetic field intensity Bm at the mirror points, in nT.unilib_i_1,unilib_i_2(columns 26-27): Integral invariant function I, in Earth radii (Re, 6,371.2 km).unilib_l_1,unilib_l_2(columns 28-29): McIlwain's L parameter, in Earth radii.unilib_l_star_1,unilib_l_star_2(columns 30-31): Roederer's L* shell parameter, in Earth radii.unilib_alpha_eq_1,unilib_alpha_eq_2(columns 32-33): Equatorial pitch angle, in degree.unilib_b_eq(column 34): Equatorial magnetic field strength, in nT.unilib_mlt(column 35): Magnetic Local Time, in hours.