Dataset of electron energy-loss reconstructions which were created by REEL analysis. Maps are labelled by energy-loss in eV. They cover the range from -7.5 eV to 729.75 eV in 0.75 eV steps. A scaling factor of 532/515 yields more accurate energy-loss values. Low-pass filtering is advantageous for display. The sample is Ryanodine Receptor 1, purified from rabbit skeletal muscle. The reference reconstruction was refined to 24 Å resolution.