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Table 2:

Parameters of the observed continuum sources shown in Figs. 1 and 2.

Name 		$\alpha$ $\delta$ $F_{\rm peak}$ $T_{\rm SB}$ $\Theta_{\rm HP}$a $\Theta_{\rm S}$a $S_{\rm\nu}$
  (J2000) (J2000) (mJy beam-1) (K) ( $\hbox{$^{\prime\prime}$ }$) ( $\hbox{$^{\prime\prime}$ }$) (mJy)
H II regions spatially coincident with H2O masers
G32.74-0.07 18:51:21.86 -00:12:06.2 38 66 $\sim$1.0 $\le$0.3 42.7
G35.03+0.35B 18:54:00.65 +02:01:19.4 4 8 $\sim$1.1 $\le$0.4 4.4
G35.20-0.74 18:58:13.02 +01:40:36.1 2 4 1.2 0.7 3.0
H II regions not associated with H2O masers
G12.22-0.12 18:12:39.71 -18:24:20.7 60 84 5.7 5.5 210.0
G31.28+0.06 18:48:11.93 -01:26:28.7 6 11 5.8 5.7 234.0
G31.24-0.11 18:48:45.02 -01:33:10.6 92 177 4.6 4.5 606.8
G31.21-0.18 18:48:56.64 -01:36:43.0 9 12 $\sim$1.0 $\le$0.3 9.9
G35.03+0.35A 18:54:00.49 +02:01:18.3 13 26 $\sim$1.0 $\le$0.3 13.6
G35.20-1.74A 19:01:46.51 +01:13:24.8 234 505 2.5 2.2 2351.9
G35.20-1.74B 19:01:46.62 +01:13:35.5 25 53 3.6 3.5 198.3
G43.89-0.38 19:14:26.18 +09:22:34.1 67 127 7.0 6.9 429.8
G48.61+0.02 19:20:31.18 +13:55:23.4 18 27 1.5 0.9 29.4
G50.32+0.68 19:21:27.52 +15:44:20.9 34 42 4.2 3.9 71.5
G75.78+0.34 20:21:44.10 +37:26:39.5 2 4 1.7 0.5 19.1

Notes. (a) When the ammonia cores are not spatially resolved, $\Theta_{\rm HP}$ is a measure of the HPBWs of the NH3(2, 2) and (3, 3) maps, whereas we arbitrarily assume about one third of the synthesized beam as an upper limit (used to derive the parameters listed in the table) on $\Theta_{\rm S}$ (see text).


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