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\documentclass[border=5pt]{standalone} 

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc} 
\usepackage[ngerman]{babel} 
\usepackage{lmodern}
\usepackage{siunitx}
\usepackage{pgfplots}

\pgfplotsset{compat=newest}
\sisetup{locale=DE}

\begin{document}
\begin{tikzpicture} 
\begin{axis}[ 
	height=6cm, 
	legend style={ 
		at={(0.5,-0.2)}, 
		anchor=north, 
		legend columns=-1 
	}, 
	ymin=0, 
	ymax=90, 
	xmin=0,
	ylabel={Temperatur in \si{\celsius}},
	ymajorgrids, 
	nodes near coords, 
	every node near coord/.append style={font=\footnotesize}, 
	point meta=explicit symbolic
] 
\addplot coordinates { 
	(0,4.499674202) 
	(10,4.324053491)
	(20,10.4473975) 
	(30,19.59755699) 
	(40,29.29712891)
	(50,41.1387128)
	(60,50.13531996)
	(70,52.05104588)
	(80,57.3142446)
	(90,67.88965727)
	(100,82.47613206)
}; 
\legend{CFD} 
\end{axis} 
\end{tikzpicture} 
\end{document}

\documentclass[parskip=full]{scrbook} 

\usepackage[T1]{fontenc} 
\usepackage[ngerman]{babel} 
\usepackage{lmodern} 
\usepackage{tikz} 

\usepackage{pgfplots, pgfplotstable}

\begin{document}

 \begin{tikzpicture} 
 \begin{axis}[ 
 height=6cm, 
 legend style={ 
 at={(0.5,-0.3)}, 
 anchor=north, 
 legend columns=-1 
 }, 
 ymin=0, 
 ymax=90, 
 ylabel={Temperatur in °C}, 
 ymajorgrids, 
 nodes near coords, 
 every node near coord/.append style={font=\footnotesize}, 
 point meta=explicit symbolic, 
 ] 
 \addplot coordinates { 
 (0,4.499674202) 
 (10,4.324053491)
 (20,10.4473975) 
 (30,19.59755699) 
 (40,29.29712891)
 (50,41.1387128)
 (60,50.13531996)
 (70,52.05104588)
 (80,57.3142446)
 (90,67.88965727)
 (100,82.47613206)
  }; 
 \legend{CFD} 
 \end{axis} 
 \end{tikzpicture} 
\end{document}