\begin{table}%t3
\caption{Standard space physics coordinate systems from Russell (1971), Hapgood (1992),
and Fr\"{a}nz \& Harper (2002), together with their associated WCS~labels for
{\tt CTYPE$i$}~declarations.}
\label{space_coord}
%\centering
\par
\begin{tabular}{llc}
\hline \hline
Coordinate system		& Abbrev.	& WCS labels\\
\hline
Geocentric equatorial inertial	& GEI	& {\tt GEIX, GEIY, GEIZ}\\
Geographic			& GEO	& {\tt GEOX, GEOY, GEOZ}\\
Geocentric solar ecliptic	& GSE	& {\tt GSEX, GSEY, GSEZ}\\
Geocentric solar magnetic	& GSM	& {\tt GSMX, GSMY, GSMZ}\\
Solar magnetic			& SM	& {\tt SM\_X, SM\_Y, SM\_Z}\\
Geomagnetic			& MAG	& {\tt MAGX, MAGY, MAGZ}\\
Helicentric Aries Ecliptic	& HAE	& {\tt HAEX, HAEY, HAEZ}\\
Heliocentric Earth Ecliptic	& HEE	& {\tt HEEX, HEEY, HEEZ}\\
Heliocentric Earth Equatorial	& HEEQ	& {\tt HEQX, HEQY, HEQZ}\\
Heliocentric Intertial		& HCI	& {\tt HCIX, HCIY, HCIZ}\\
\hline
\end{tabular}
\end{table}