I have a Filemaker file with several fields (say 10) […] export all fields + numbers to "excel", arrange all numbers into one column […] Is there any idea in the community to manage that problem via FM?
The problem is your data model; it's not properly normalized.
If you use related records (where one field denotes the attribute – what now is the field name – and another holds the value) instead of fields, you have exactly the same arrangement as in Excel – all values in one row.
Now you could use either a summary field with a found set of all records, or a Cartesian relationship and apply a function to all related values, as in StdDev ( MyValueTable__Cartesian::value ). With either method, new entries and / or new attributes can be easily / are automatically subsumed.