\begin{table}[htb!]
\centering
\caption{Total number of detections that each source contributed to for the molecules listed in \S\ref{known}. Detections made in diffuse clouds along the line of sight to a background source have been consolidated into `Diffuse Cloud,' and detections in closely located regions have been grouped together as well (e.g. Sgr B2(OH), Sgr B2(N), Sgr B2(S), and Sgr B2(M) are all considered Sgr B2).}
\begin{tabular*}{\columnwidth}{l @{\extracolsep{\fill}} c @{\extracolsep{\fill}} l @{\extracolsep{\fill}} c }
\hline\hline
Source	&	\# 	&	Source	&	\# \\
\hline
TMC-1	&	110	&	L183	&	2	\\
IRC+10216	&	70	&	Lupus-1A	&	2	\\
Sgr B2	&	70	&	NGC 2024	&	2	\\
Diffuse Cloud	&	42	&	NGC 7023	&	2	\\
Orion	&	25	&	NGC 7027	&	2	\\
G+0.693-0.027	&	19	&	TC 1	&	2	\\
L483	&	11	&	W49	&	2	\\
W51	&	8	&	CRL 2688	&	1	\\
VY Ca Maj	&	6	&	Crab Nebula	&	1	\\
B1-b	&	5	&	DR 21(OH)	&	1	\\
IRAS 16293	&	5	&	Galactic Center	&	1	\\
NGC 6334	&	5	&	IC 443G	&	1	\\
DR 21	&	4	&	K3-50	&	1	\\
Sgr A	&	4	&	L134	&	1	\\
CRL 618	&	3	&	L1495B	&	1	\\
L1527	&	3	&	M17SW	&	1	\\
NGC 2264	&	3	&	NGC 1333 IRAS 4A	&	1	\\
W3(OH)	&	3	&	NGC 7538	&	1	\\
rho Oph A	&	3	&	Orion Bar	&	1	\\
Horsehead PDR	&	2	&	PKS 1830-211	&	1	\\
L1544	&	2	&	d203-506	&	1	\\
\hline
\end{tabular*}
\label{detects_by_source}
\end{table}\endinput