\begin{array}{@{\hspace{0mm}}l@{\hspace{0mm}}r@{\hspace{0mm}}}
\includegraphics[width=0.45\hsize]{C1.1_100_S0-Sm.eps} &
\includegraphics[width=0.45\hsize]{C1.2_100_S0-Sm.eps}
\end{array}$

$
\begin{array}{@{\hspace{0mm}}r@{\hspace{0mm}}r@{\hspace{5mm}}r@{\hspace{0mm}}r@{\hspace{0mm}}}
\includegraphics[width=0.22\hsize]{C2.1_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C2.2_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C2.3_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C2.4_100_S0-Sm.eps}
\end{array}$

$
\begin{array}{@{\hspace{0mm}}l@{\hspace{0mm}}r@{\hspace{0mm}}}
\includegraphics[width=0.45\hsize]{C3.1_100_S0-Sm.eps} &
\includegraphics[width=0.45\hsize]{C3.2_100_S0-Sm.eps}
\end{array}$

$
\begin{array}{@{\hspace{0mm}}r@{\hspace{0mm}}r@{\hspace{5mm}}r@{\hspace{0mm}}r@{\hspace{0mm}}}
\includegraphics[width=0.22\hsize]{C4.1_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C4.2_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C4.3_100_S0-Sm.eps} &
\includegraphics[width=0.22\hsize]{C4.4_100_S0-Sm.eps}
\end{array}$

Fig. \[hist\_coord\] shows (in red) the $V/R_{25}$ versus $U/R_{25}$ distributions in face-on and edge-on S0–Sm galaxies, as well as their histograms. The sample of SNe in face-on galaxies consists of 180 Ia and 320 CC SNe (see Table \[table\_SN\_morph\]), while the ancillary sample of SNe in edge-on hosts (not shown in Table \[table\_SN\_morph\]) includes 105 Ia and 181 CC SNe. In disc galaxies, all types of SNe preferentially appear along the major $U$ axis (see the standard deviations in Table \[SNeindisc\]). This effect is stronger in edge-on galaxies. In fact, the two-sample Kolmogorov–Smirnov (KS) and Anderson–Darling (AD) tests,[^12] shown in Table \[SNeindisc\], indicate that the distributions of $U/R_{25}$ and $V/R_{25}$ are significantly different, both for Type Ia and CC SNe (except for Type Ia SNe in face-on hosts with the KS test).

\[SNeindisc\]

  ------------------------------ ---- ----- ------- ------- ----------- ----------- -- ----- ------- ------- ----------- -----------
                                                                                                                         
                                                                                                                         
  $U/R_{25}$ versus $V/R_{25}$   Ia    180   0.394   0.299     0.217     **0.026**      105   0.385   0.154   **0.001**   **0.000**
  $U/R_{25}$ versus $V/R_{25}$   CC    320   0.382   0.299   **0.003**   **0.002**      