This figshare data set contains more easily accessible format of files included in figshare dataset https://doi.org/10.6084/m9.figshare.7150760 In situ sequencing (ISS) is a technology to sequence RNA directly inside tissue sections, and probabilistic cell typing by ISS (pciSeq) method is a method to spatially map single-cell RNA-sequencing defined cell types. (See Associated Publication) * spots_whole_section files have three columns: genes, X and Y position * mask files contain polygon coordinates of CA1 regions * cells files have cell ID, X and Y position of cells in CA1, and sum of probabilities of all assigned reads. * spots_w_segmentation files contain spot assignment results from pciSeq algorithm. * celltype files contain cell type assignment results from pciSeq algorithm.