%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-3-35 on page I-175 in "Customizing units and quantities".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{135.0pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{siunitx} \DeclareSIQualifier\oak{oak}
\DeclareSIQualifier\daylight{dl} \DeclareSIQualifier\solar{sol}
\newcommand\sample[1]{#1: \qty{3}{\cubic\m\oak}
 \hfil \qty{5}{\kW\solar\per\hour\daylight}\\[5pt]}
%StopShownPreambleCommands

\begin{document}
                                        \sample{A}
\sisetup{qualifier-mode=bracket}        \sample{B}
\sisetup{qualifier-mode=space}          \sample{C}
\sisetup{qualifier-mode=phrase}         \sample{D}
\sisetup{qualifier-phrase={\text{\,t:}}}\sample{E}
\end{document}