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Time Series Tutorial. Time-Series Analysis of Another excellent package is the PERIOD04 software developed by the Delta Scuti Network group at Vienna.Period04 is the Delta Scuti Network's free program for analyzing variable star light curves that will run in Windows. Specifically, Period04 enables searching Note: Period04 has a very complete tutorial that you can consult and learn more about this tool. period04. Import the file with time and magnitude/flux. You may wish to use the file Empty Period04 file.p04 in this directory. The tab Time string is selected and active. You will see four empty columns. In this tutorial, we will use Period04 to examine a data set and determine the frequencies by using Fourier analyses to give us rough values of the frequencies Period04 is a computer program especially dedicated to the statistical analysis of large astronomical time series containing gaps. The program offers tools 2) You will also need the tutorial data files found on the Period04 homepage. Download either tutorial.zip or tutorials.tar.gz. Period04 is a computer program especially dedicated to the statistical analysis of large astronomical time series containing gaps. The program offers tools PDF | Period04, a reworked and extended version of Period98 (Sperl 1998) and PERIOD/PERDET (Breger 1990), is a new software package especially dedicated.