\begin{table}%t1
%\centering
\par
\caption{Cone opening angle(s) $\Omega$, diameter of the outflow base
{\it B} = 2{\it b}, and cone wall thickness $\Delta${\it b} determined in 
earlier optical observations and recent radio observations.}\label{t1}
\begin{tabular}{lccc} 
\hline\hline
Observation & Cone angle $\Omega$ & Diameter & Cone Wall \\
            &   [$\degr$]         & at Base {\it B}~[pc] 
& Thickness $\Delta${\it b}~[pc] \\
\hline
{\bf Optical Observation}        &                &     &         \\
(1) Lynds~\&~Sandage~(\cite{Lyn63}) & "closed loops''~($\Omega$ = 120) &
     &         \\
(2) Burbidge et~al.~(\cite{Bur64})      & $\Omega$ $\approx$ 20 & pointed  &  \\
(3) Deharveng~\&~Pellet~(\cite{Deh70}) & "loop''    &  & 30; 300  \\
(4) Heckathorn (\cite{Hec72})          & cone   & pointed   &     \\
(5) Axon~\&~Taylor~(\cite{Axo78}) & cone   &           &     \\  
(6) Bland~\&~Tully~(\cite{Bla88}) & "bubbles''   & pointed  &    \\
(7) Heckman et~al.~(\cite{Hec90})  & $\Omega$$_{\rm SE}$~=~$\Omega$$_{\rm NW}$ = 62
            & pointed &    \\
(8) G\"otz et~al.~(\cite{Got90})  & $\Omega$ = 30 & {\it B}$_{\rm o}$ = 750 &   \\
(9) McKeith et~al.~(\cite{McK95})     &  $\Omega$ = 30   & $\sim$500 &   \\ 
(10) Shopbell et~al.~(\cite{Sho98}) & SE: $\Omega$$_{\rm i}$ = 5; 
$\Omega$$_{\rm o}$ = 25 & 375--400 & \\
{\it Derived by us from:}           &        &    &    \\ 
(11) Width Ellips (BT-88)    &       &   & 250   \\
(12) Width Ellips (HAM-90)   &       &   & 200--400  \\
(13) Thickness Filaments (DB-99) &   &   & 150--200   \\
\hline
{\bf Radio Observation (CO)}   &             &     &       \\                
(14) Seaquist \& Clark~(\cite{Sea01})  & $\Omega$$_{\rm SE}$ = 90, 
$\Omega$$_{\rm NW}$ = 40  & $\sim$750 & $\sim$~300 \\
(15) Walter et~al.~(\cite{Wal02})  & $\Omega$$_{\rm SE}$ = 55 & $\sim$400 
& $\sim$250  \\
{\it Derived by us from :}     &    &            & \\
(16) Neininger et~al.~(\cite{Nei98})  &    & {\it B}$_{\rm i}$ $\approx$ 300;
{\it B}$_{\rm o}$ $\approx$ 800 & $\sim$250 \\
\hline  \noalign{\smallskip}        
\multicolumn{4}{l}{
SE: South-Eastern side of disk; NW: North-Western side of disk.}
\\
\multicolumn{4}{l}{
Remarks made by the authors or by us: (1) LS.: opening angle used in a model 
discussion. (2) B. et~al.: optically thick cone,}
\\
\multicolumn{4}{l}{
only the front is visible. (3) DP.: apparent width of filament $\sim$2$''$
= 30~pc; (us): thickness of cone limbs (300~pc).}
\\
\multicolumn{4}{l}{
(5)--(10): hollow cones are mentioned.}
\\
\multicolumn{4}{l}{
(6) BT.: SE bubble is cone-like up to {\it z} = --~975~pc, $\Omega$ = 
35$\degr$. (7) H. et~al.: pointed, their Fig.~19; tilted by $\Theta$ 
$\approx$ 30--40$\degr$.} 
\\
\multicolumn{4}{l}{
(8) G. et al: measured at {\it z} = 150~pc parallel to major axis; at smaller 
distances no line splitting.}
\\ 
\multicolumn{4}{l}{
(10) SBH.: $\Omega$$_{\rm i}$: inner cone, ${\it z} \la-350$~pc;
$\Omega$$_{\rm o}$: outer cone.}
\\
\multicolumn{4}{l}{
(11) (us): at {\it z} = --750~pc parallel to major axis.}
\\
\multicolumn{4}{l}{
(12) (us): at {\it z} = --900~pc parallel to major axis.}
\\
\multicolumn{4}{l}{
(13) (us): derived from the image published by Devine \& Bally.}
\\
\multicolumn{4}{l}{
(14)~+~(15) (us): {\it B} and $\Delta${\it b} extracted from published 
angular momentum diagrams.}
\\
\multicolumn{4}{l}{
(16) (us): {\it B}$_{\rm i}$ and {\it B}$_{\rm o}$ are the CO ring inner and 
outer diameter; $\Delta${\it b} = ({\it B}$_{\rm o}$ -- {\it B}$_{\rm i}$)/2.
Similar values follow from the data}
\\
\multicolumn{4}{l}{
published by Telesco et~al. (\cite{Tel91}), Achtermann \& Lacy (\cite{Ach95}), Wei\ss{} et~al. (\cite{Wei01}), and Mao et~al. (\cite{Mao00}).}
\end{tabular}
\end{table}