Data related to calculation of field electron emission from microstructures in the atmospheric pressure range as well as enhancement factors from literature and breakdown voltage for microgaps. README files are included in each folder to aid the understanding of the datasets and how to use the codes. Please refer to those.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV