The raw data used to make the figure for the article "Kinetic Monte Carlo simulations of solid-state photon upconversion quantitatively describe an anticorrelation between emission yield and threshold intensity due to FRET" by Krishnapriya Kunnumma Chelladath, Anton M. Berghuis, Hannah Tideland, Andrew J. Carrod and Karl Börjesson are here stored. The data consist of: Emission and absorption spectra. Kinetic Monte Carlo simulations The first part of the filename indicate to which figure in the article that the data belongs to. Figure 1 corresponds to Figure 1 in the manuscript and so forth for every figure. Folder structure: Folders named Figure X contain the corresponding figure in the manuscript in both the program in which it was made and the final exported file type used in the manuscript. The file ending describes what type of data that the file consist. ".svg, wmf, pdf, bmp, png", figure files, originally compiled using the incscape, matlab and origin softwares ".opju" figure file, can be opened using the Origin software. ".m", matlab scripting file ".mat", matlab data file ".fig", matlab figure file ".json", matlab input and results files ".txt, .csv, and .xlsx", data files that can be open by excell