POWER CHART Problems EXPORTING data to csv file

It can be solved in excel, but there are some problems. For example the number of decimals are not always the same:

In the image you can see sometime is 14, sometimes 15.. and when you transform the columns in excel are all at the same time.

And in excel the decimal is 1 more (I dont know why).. 15.. 16..

where can we format / transform the tag values before they are stored in history?? What part in Ingnition I mean.

I think it will be the best solution because you can get the data directly and no changes after that will be needed.

Thanks so much