How to use QATS in SIMA QATS is an open source python library for time series analysis developed by DNV. Tools for Import and export from/to various pre-defined time series file formats files exported from SIMO and RIFLEX, SIMA hdf5 (.h5) files Matlab (version < 7.3) .mat files, CSV files and more Signal processing Inferring statistical distributions Cycle counting using the Rainflow algorithm 1. Python 3.9 You need to add PyQt5 until Pyside2 supports Python 3.9 In Python 3.9: Start Qats and check: