in the text 8$^{th}$ Floor gives by default the "th" in italic (latex puts it as a variable). With 8$^{\textrm{th}}$ Floor the superscript is in standard textstyle, means upright and normal size. Same is possible for subscript, where digits are always in upright-mode. x$_{01}$, x$_{\textrm{01}}$

If you don't like this writing in mathmode ($...$) you can choose \raisebox

in latex preamble write \newcommand{\sups}[1]{\raisebox{1ex}{\small #1}} \newcommand{\subs}[1]{\raisebox{-1ex}{\small #1}} In the text then write 8\sups{th} Floor x\subs{01} it looks a little bit better, because it's easier to choose a different fontsize, e.g. small.