All steps of the process will be logged so that all intermediate results such as day type patterns, day type quotients, regression coefficients etc. are written to a text based forecast log file which can be opened by notepad or in Excel as a comma separated file. Also, when the forecasts are made and the result is displayed, the system also enables both graphical comparisons in the graph as well as value by value in the Excel-like grid, between the auxiliary series and the forecast series.