Table 3: Abundances in the Local Sgr (III), -30  km s-1 (IV) and 3-kpc (V) Spiral Arm features.

Position		 Feature I(C18O) N(C18O) N(H2) N[H2O] X [H2O]
    (K km s-1) (cm-2) (cm-2) (cm-2)  
Sgr $\rm {A}^{\star }$ CND III 2.10 $2.1\times 10^{15}$ $1.0\times 10^{22}$ > $2\times 10^{13}$ > $2\times 10^{-9}$
  IV 0.18 $1.8\times 10^{14}$ $9.0\times 10^{20}$ > $9\times 10^{12}$ > $1\times 10^{-8}$
  V 0.65 $6.5\times 10^{14}$ $3.2\times 10^{21}$ > $8\times 10^{12}$ > $2\times 10^{-9}$
+20  km s-1 cloud III 1.00 $1.0\times 10^{15}$ $5.0\times 10^{21}$ > $1\times 10^{13}$ > $2\times 10^{-9}$
  IV 0.34 $3.4\times 10^{14}$ $1.7\times 10^{21}$ > $1\times 10^{13}$ > $6\times 10^{-9}$
  V 0.96 $9.6\times 10^{14}$ $4.8\times 10^{21}$ > $2\times 10^{13}$ > $4\times 10^{-9}$

+50  km s-1 cloud		 III 1.10 $1.1\times 10^{15}$ $5.5\times 10^{21}$ > $2\times 10^{13}$ > $4\times 10^{-9}$
  IV 0.64 $6.4\times 10^{14}$ $3.2\times 10^{21}$ > $1\times 10^{13}$ > $3\times 10^{-9}$
  V 0.81 $8.1\times 10^{14}$ $4.0\times 10^{21}$ > $6\times 10^{12}$ > $2\times 10^{-9}$


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