.. _overview:

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Overview
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This package gets, processes, and analyzes data from the Responsive Environmental Assessment Commercially Hosted (REACH) dosimeters.  
Built by the `Aerospace Corporation <https://aerospace.org/>`_ and flown on 32 Iridium NEXT spacecraft, REACH provides global, low-latency monitoring of space weather hazards, including total dose, internal charging, and single-event effects. 
Across the constellation, 64 dosimeters spanning six sensor types which together provide high-cadence global measurements of particle populations from about 100 keV to 2.5 MeV electrons and about 1 MeV to 50 MeV protons.