Latex 表格列未居中

Question

为什么第四列不居中？如何修复这个问题并保持样式不变？

\documentclass[12pt,oneside,ngerman,reqno,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amsthm}     % ams stuff should be before font loading
\usepackage{lmodern}
\usepackage[T1]{fontenc}        % should be after font loading
\usepackage{fixltx2e,babel}
\usepackage[numbers]{natbib}    % bibtex package
%\usepackage{typearea}           % custom type area
%   \areaset[0mm]{135mm}{210mm}  % typearea configuration
%   \topmargin5mm                % typearea configuration
\usepackage{graphicx}
\usepackage{url}

\usepackage{booktabs}
\usepackage{tabularx}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{subfig}
\usepackage{pgfplots}

\usepackage{floatrow}
\usepackage{hhline, array, makecell}
\setcellgapes{4pt}
\makegapedcells
%\usepackage[showframe, margin = 25mm]{geometry}
\usepackage{siunitx}
\newcolumntype{I}{S[table-format=4.0]}
\begin{document}

\begin{tabular}{@{}I|I|I|I|S[table-format = 2.2]@{}}
      {Züge\,[\#]} & {Planungsintervall\,[min]} & {Zeit\,[s]} &{ Lücke\,[\%]} & {Verbesserung\,[MW]} \\
      \hhline{ >{\arrayrulewidth = 2pt}:=:=:=:=:=:}      
   10 & 28 & 25 & 0.00 & 2.05\\ 
   20 & 36 & 12 & 0.00 & 2.79 \\
   50 & 68 & 333 & 0.00 & 1.92 \\
   100 & 122 & 1800 & 1.92 & 2.09\\ 
   200 & 127 & 1800 & 1.08 & 3.94 \\
   500 & 149 & 1800 & 21.37  & 0.00 \\
   1000 & 346 & 509 & 0.00 & 3.00\\ 
   2000 & 460 & 1514 & 0.00 & 3.06\\ 
   \hhline{ >{\arrayrulewidth = 2pt}:=:=:=:=:=:}
   \O &  & 974 & 3.04 & 2.36 \\ \hline
      \Xhline{0.8pt}
\end{tabular}
\end{document}

Answer 1

其中几列table-format所含数据不正确，导致它们看起来不居中。

更规范地使用booktabs和的解决方案siunitx。我稍微调整了值，\tabcolsep以便表格适合文本宽度。

\documentclass[12pt,oneside,ngerman,reqno,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amsthm}     % ams stuff should be before font loading
\usepackage{lmodern,babel}

\usepackage{booktabs}

\usepackage{array}
\setlength\tabcolsep{4pt} % slightly narrowed (default 6pt) to fit to text width
\usepackage{siunitx}
\newcolumntype{I}{S[table-format=4.0]}
\begin{document}
\begin{tabular}{IS[table-format=3.0]IS[table-format=2.2]S[table-format = 1.2]}
  \toprule
  {Züge/\si{\#}} & {Planungsintervall/\si{\minute}} & {Zeit/\si{\second}} &{ Lücke/\si{\percent}} & {Verbesserung/\si{\mega\watt}} \\
  \midrule
    10 &  28 &   25 &  0.00 & 2.05 \\
    20 &  36 &   12 &  0.00 & 2.79 \\
    50 &  68 &  333 &  0.00 & 1.92 \\
   100 & 122 & 1800 &  1.92 & 2.09 \\
   200 & 127 & 1800 &  1.08 & 3.94 \\
   500 & 149 & 1800 & 21.37 & 0.00 \\
  1000 & 346 &  509 &  0.00 & 3.00 \\
  2000 & 460 & 1514 &  0.00 & 3.06 \\
  \addlinespace
    \O &     &  974 &  3.04 & 2.36 \\
  \bottomrule
\end{tabular}
\end{document}