Abstract
We present data from the sister instruments Merlin and cosmic radiation environment dosimetry and charging experiment (CREDANCE), from medium Earth orbit (MEO) and the slot region, respectively. Each instrument measures internal charging current, proton and ion flux, and total ionizing dose with an identical suite of instruments. In this article, we present charging current and proton flux data. Merlin flew on board the Giove-A MEO testbed spacecraft from December 2005 to November 2021. CREDANCE flew on board the Demonstration and Science Experiments (DSX) spacecraft from July 2019 to May 2021.