\begin{table}%t3
\caption{Geometry of the main coma structures of dusty origin in the SW3
components~B and C$^a$.}\label{structure_geometry}
\small%\centerline
 {
\begin{tabular}{cccccl}
\hline \hline
SW3 &  ID  & PA (deg)   & Curv   & MinExt (km) & Comment \\
Comp &     & 3/4/8/9 May     & 3/4/8/9 May & 3/4/8/9 May           & \\
\hline 
B  & FA          &  nd/nd/19/15     & nd/nd/S/S   & nd/nd/4000/3300
   & continuous fan area? \\
B  & FB          &  nd/nd/54/62     & nd/nd/S/S   & nd/nd/3500/3000
   & continuous fan area? \\
B  & SP          &  35/42/nd/nd     & S?/CC?/nd/nd& 300/600/nd/nd          
   & sunward dust spike \\
B  & T1         &  216/221/226/236 & S/S/S/S     &
$>$28~000/$>$22~000/$>$16~000/$>$14~000 & main dust tail \\
B  & T2         &  225/233/242?/nd & CC/CC/S?/nd & 21~000/$>$23~000/$>$16~000/nd
   & sec. dust tail plus fragments\\
\hline 
C  & FA          &  9/27/28/42      & S/S?/S/S    & 5000/3000/4500/3000
   & continuous fan area? \\
C  & FB          &  52/78/85/105    & S/S?/S/S    & 5000/3000/4000/2500
   & continuous fan area? \\
C  & T           &  230/230/240/240 & S/S/S/S     &
$>$35~000/$>$25~000/$>$20~500/$>$14~000 & main dust tail \\
\hline
\end{tabular}}
\medskip
$^a$ Notes: The table lists the comet component (SW3~Comp), the structure designation~(ID), the near-nucleus position angle (PA; measured North over East), the
curvature (Curv), and minimum extension (MinExt), plus some comments. 
In columns ``PA'', ``Curv'', ``MinExt'' the measurements for the four observing nights
are listed, separated by ``/''. Abbreviations: nd~= not detected, CC~=
counterclockwise, S~= straight. The various coma structures are 
identified in Figs.~\ref{C_laplace} and~\ref{B_laplace}.
\end{table}