I would like to make a pivot table of exported values, but the application doesn\'t export the values of each period as a flat list but unfortunately as a cross table.
The method you link to in your answer is a very limited one. Better to either:
Use PowerQuery aka "Get and Transform" if you have Excel 2013 or
later. Google PowerQuery Unpivot and you will turn up hundreds of tutorials, such as this one from my good pal Chandoo https://chandoo.org/wp/2015/09/29/unpivot-data-with-power-query/
Use VBA. Google Unpivot VBA and turn up hundreds of results,
including this blazingly fast code I posted some time back:
http://dailydoseofexcel.com/archives/2013/11/21/unpivot-shootout/ (Look for the code under the —Update 26 November 2013— heading.)
Use the DoubleClick extraction trick. See
http://datapigtechnologies.com/blog/index.php/transposing-a-dataset-with-a-pivottable/