Manipulates an Excel file, in 'csv' (comma-separated values) format. Column 'kol' is selected and read. The data in the column are handled to produce a histogram.
Data are accepted in (coherent) ", ;" ("European") style or ". ," ("American") style.
• Google "microsoft excel file formats"
• Wikipedia "Comma-separated values".
• 1546-12-14: Brahe, Tycho (1601-10-24).