These are processed data sets from the simulation of nucleotide conversions (T>C) in single-end and paired-end Illumina TruSeq reads for the purpose of investigating 4sU-induced mapping impairment by read lengths and library preparation methods and the potential of grandRescue to alleviate these effects. The original data set is from: Sarantopoulou, D. et al. (https://doi.org/10.1038/s41598-019-49889-1) GEO Accession:GSE124167 (samples: GSM3523316 - GSM3523318) The zip files contain the full output from the processing pipeline (including the mapped reads, the scripts to run the pipeline and the output) for single-end (R1) and paired-end before and after rescue. The *.tsv.gz files are the GRAND-SLAM output tables. To generate the GRAND-SLAM output yourself, first prepare the mouse genomes. Then run the following command with the respective cit-files, prefixes (*.cit) and genome: gedi -e Slam -trim5p 15 -reads *.cit -genomic m.ens102 -prefix grandslam_t15/* -plot -D -modelall To generate the cit file you have to modify the first lines in start.bash to match the paths on your file system, and then run it. Software versions: gedi toolkit 1.0.5 GRAND-SLAM 2.0.7 STAR version 2.7.10b