\begin{tikzpicture}[
declare function = {
xs=5;xs3=10;ys=-5;
}]
\draw[very thick] (0,3) node[above left]{\sffamily\bfseries 1} -- (0,0) node[pos=0.5,rotate=90,above] {$\ln k$} -- (4,0) node[pos=0.5,below] {$1/T$};
\node [teal] at (0.65,2.35) {$\bullet$};
\node [teal] at (1.2,1.98) {$\bullet$};
\node [teal] at (2.2,1.44) {$\bullet$};
\node [teal] at (3.15,0.97) {$\bullet$};
\draw[blue] (0.15,2.6) -- (3.8, 0.6);
\draw[very thick] (0+xs,3) node[above left]{\sffamily\bfseries 2} -- (0+xs,0) node[pos=0.5,rotate=90,above] {$\ln k$} -- (4+xs,0) node[pos=0.5,below] {$1/T$};
\node [teal] at (0.65+xs,0.88) {$\bullet$};
\node [teal] at (1.2+xs,1.19) {$\bullet$};
\node [teal] at (2.2+xs,1.67) {$\bullet$};
\node [teal] at (3.15+xs,2.25) {$\bullet$};
\draw[blue] (0.15+xs,0.6) -- (3.8+xs, 2.6);
\draw[very thick] (0+xs3,3) node[above left]{\sffamily\bfseries 3} -- (0+xs3,0) node[pos=0.5,rotate=90,above] {$\ln k$} -- (4+xs3,0) node[pos=0.5,below] {$1/T$};
\node [teal] at (0.65+xs3,1.45) {$\bullet$};
\node [teal] at (1.2+xs3,1.5) {$\bullet$};
\node [teal] at (2.2+xs3,1.5) {$\bullet$};
\node [teal] at (3.15+xs3,1.51) {$\bullet$};
\draw[blue] (0.15+xs3,1.5) -- (3.8+xs3, 1.5);
\draw[very thick] (0,3+ys) node[above left]{\sffamily\bfseries 4} -- (0,0+ys) node[pos=0.5,rotate=90,above] {$\ln k$} -- (4,0+ys) node[pos=0.5,below] {$1/T$};
\node [teal] at (0.65,ys+0.19) {$\bullet$};
\node [teal] at (1.2,ys+0.35) {$\bullet$};
\node [teal] at (2.2,ys+0.95) {$\bullet$};
\node [teal] at (3.15,ys+2.35) {$\bullet$};
\draw [blue] (0.5,ys+0.2) .. controls (1.5,ys+0.1) and (3,ys+1.4) .. (3.25,ys+2.75);
\draw[very thick] (0+xs,3+ys) node[above left]{\sffamily\bfseries 5} -- (0+xs,0+ys) node[pos=0.5,rotate=90,above] {$\ln k$} -- (4+xs,0+ys) node[pos=0.5,below] {$1/T$};
\node [teal] at (0.65+xs,ys+1.88) {$\bullet$};
\node [teal] at (1.2+xs,ys+1.1) {$\bullet$};
\node [teal] at (2.2+xs,ys+0.43) {$\bullet$};
\node [teal] at (3.15+xs,ys+0.175) {$\bullet$};
\draw [blue] (xs+0.3,ys+2.8) .. controls (xs+0.9,ys+0.65) and (xs+2.8,ys+0.1) .. (xs+3.3,ys+0.15);
\end{tikzpicture}