How to include superscript numbers in column headings?

[#1]

Hi,

I want to create some figures (PCA biplot) with stable isotope variables in them. How can I include superscripts in the headings of my column? Specifically δ¹⁵N and δ¹³C?

[#2]

hi arm2785​,

try the following:

Writing subscripts or superscripts in graph labels