Pioneer 11: Hourly Energetic Particle Count Rates from Geiger Tube Telescope

Hourly count rates from the University of Iowa Geiger Tube Telescope (GTT) carried on the Pioneer 11 spacecraft. The data includes five distinct rates for electrons and protons across different energy thresholds, such as electrons > 0.06 MeV plus protons > 25 MeV. The National Aeronautics and Space Administration (NASA) provides the data as annual ASCII files, with hourly averages computed at the NSSDC from 15-minute data.

Use Cases

• Modeling radiation belt dynamics based on multi-energy channel particle counts.
• Studying long-term solar modulation of cosmic rays based on hourly time-series data.
• Correlating energetic particle events with solar activity based on the five defined energy thresholds.

Strengths

• Data originates from the Pioneer 11 spacecraft, a historic NASA mission.
• Provides five distinct particle count rates for different energy combinations, enabling multi-energy analysis.
• Data is processed into hourly averages, which may simplify trend analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes some 15-minute source data was offline as of February 2009.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Hourly averages computed at NSSDC from 15-minute data collected by the University of Iowa Geiger Tube Telescope on Pioneer 11.

Time Range

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Freshness

Last updated 2026-03-13 07:51:54.160366; freshness should be verified.

Geography

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