Os subfloats do Subfig não se alinham horizontalmente

Question

por alguma razão, não consigo alinhar essas duas imagens tikz uma ao lado da outra usando subfig. Eles sempre acabam um abaixo do outro. A largura das imagens tikz não parece ser o problema.

Se alguém pudesse ajudar, seria ótimo!

\begin{figure}

    \centering

    \subfloat[i10c01t051a060b050n25m15]{\begin{tikzpicture}[baseline]
        \begin{axis}[
        width=0.45\textwidth,
        legend style={font=\footnotesize,draw=none},
        xlabel=eye-sight,
        grid=major,
        grid style={dashed,gray!30},
        legend style={at={(0.5,-0.3)},anchor=north},
        x tick label style={rotate=90,anchor=east}]

        \addplot[smooth,mark=*,blue] table[x=eye-sight,y=v-score,col sep=comma] {data/Ti10c01t051a060b050n25m15.csv}; 
        \addlegendentry{v-score (T)}

        \addplot[smooth,mark=*,red] table[x=eye-sight,y=v-score,col sep=comma] {data/Ri10c01t051a060b050n25m15.csv}; 
        \addlegendentry{v-score (R)}

        \addplot[smooth,mark=diamond*,blue,dashed] table[x=eye-sight,y=retb,col sep=comma] {data/Ti10c01t051a060b050n25m15.csv}; 
        \addlegendentry{retention believers (T)}

        \addplot[smooth,mark=halfdiamond*,blue,dashed] table[x=eye-sight,y=retd,col sep=comma] {data/Ti10c01t051a060b050n25m15.csv}; 
        \addlegendentry{retention disbelievers (T)}

        \end{axis}
        \end{tikzpicture}}
    \quad

    \subfloat[i10c01t060a060b050n25m15]{\begin{tikzpicture}[baseline]
        \begin{axis}[
        width=0.45\textwidth,
        legend style={font=\footnotesize,draw=none},
        xlabel=eye-sight,
        grid=major,
        grid style={dashed,gray!30},
        legend style={at={(0.5,-0.3)},anchor=north},
        x tick label style={rotate=90,anchor=east}]

        \addplot[smooth,mark=*,blue] table[x=eye-sight,y=v-score,col sep=comma] {data/Ti10c01t060a060b050n25m15.csv}; 
        \addlegendentry{v-score (T)}

        \addplot[smooth,mark=*,red] table[x=eye-sight,y=v-score,col sep=comma] {data/Ri10c01t060a060b050n25m15.csv}; 
        \addlegendentry{v-score (R)}

        \addplot[smooth,mark=diamond*,blue,dashed] table[x=eye-sight,y=retb,col sep=comma] {data/Ti10c01t060a060b050n25m15.csv}; 
        \addlegendentry{retention believers (T)}

        \addplot[smooth,mark=halfdiamond*,blue,dashed] table[x=eye-sight,y=retd,col sep=comma] {data/Ti10c01t060a060b050n25m15.csv}; 
        \addlegendentry{retention disbelievers (T)}

        \end{axis}
        \end{tikzpicture}}

Answer 1

Funciona sem linhas vazias ao redor do \quad:

\documentclass{article}

\usepackage{subfig}

\usepackage{tikz}
\usepackage{pgfplots}

\begin{filecontents*}{test.csv}
eye-sight,v-score, retb, retd
1, 2, 3, 5
3, 4, 5, 6
\end{filecontents*}

\begin{document}

\begin{figure}
    \centering
    \subfloat[i10c01t051a060b050n25m15]{\begin{tikzpicture}[baseline]
        \begin{axis}[
        width=0.45\textwidth,
        legend style={font=\footnotesize,draw=none},
        xlabel=eye-sight,
        grid=major,
        grid style={dashed,gray!30},
        legend style={at={(0.5,-0.3)},anchor=north},
        x tick label style={rotate=90,anchor=east}]

        \addplot[smooth,mark=*,blue] table[x=eye-sight,y=v-score,col sep=comma] {test.csv}; 
        \addlegendentry{v-score (T)}

        \addplot[smooth,mark=*,red] table[x=eye-sight,y=v-score,col sep=comma] {test.csv}; 
        \addlegendentry{v-score (R)}

        \addplot[smooth,mark=diamond*,blue,dashed] table[x=eye-sight,y=retb,col sep=comma] {test.csv}; 
        \addlegendentry{retention believers (T)}

        \addplot[smooth,mark=halfdiamond*,blue,dashed] table[x=eye-sight,y=retd,col sep=comma] {test.csv}; 
        \addlegendentry{retention disbelievers (T)}

        \end{axis}
        \end{tikzpicture}}
    \quad
    \subfloat[i10c01t060a060b050n25m15]{\begin{tikzpicture}[baseline]
        \begin{axis}[
        width=0.45\textwidth,
        legend style={font=\footnotesize,draw=none},
        xlabel=eye-sight,
        grid=major,
        grid style={dashed,gray!30},
        legend style={at={(0.5,-0.3)},anchor=north},
        x tick label style={rotate=90,anchor=east}]

        \addplot[smooth,mark=*,blue] table[x=eye-sight,y=v-score,col sep=comma] {test.csv}; 
        \addlegendentry{v-score (T)}

        \addplot[smooth,mark=*,red] table[x=eye-sight,y=v-score,col sep=comma] {test.csv}; 
        \addlegendentry{v-score (R)}

        \addplot[smooth,mark=diamond*,blue,dashed] table[x=eye-sight,y=retb,col sep=comma] {test.csv}; 
        \addlegendentry{retention believers (T)}

        \addplot[smooth,mark=halfdiamond*,blue,dashed] table[x=eye-sight,y=retd,col sep=comma] {test.csv}; 
        \addlegendentry{retention disbelievers (T)}

        \end{axis}
        \end{tikzpicture}}
\end{figure}

\end{document}