All Tables

Table 1: Summary of the ¹³CO (2-1) and (1-0) observations. Intensity of the ¹³CO (1-0) line ( $T_{\rm mb}$ ) and ¹³CO (2-1)/(1-0) intensity ratio calculated from the $T_{\rm mb}$ temperatures without any correction for the different beam sizes. When the ¹³CO (2-1) line has not been detected we have used 3 $\sigma$ upper limits to calculate the 2-1/1-0 ratio. The LVG results for $T_{\rm K}=20$ K are also displayed. For the sources where the ¹³CO (2-1)/(1-0) ratio could not be determined, we have assumed a H2 density of n=10^3-4.5 cm^-3. The SiO column density, N(SiO), has been calculated for a H₂ density of 10^4.5 cm^-3. The SiO abundance relative to H₂, X(SiO), has been calculated using a ¹³CO abundance of $5\times 10^{-6}$ (see text).
Table 2: Galactic longitude and latitude (in degrees), velocity (km s^-1), widths (km s^-1), and intensities (K) of the CS lines. In addition, the SiO to CS intensity ratio is also shown. The numbers in parentheses are the uncertainties on the last digit. The positions observed with the IRAM 30 m telescope are indicated with a superscript. All the other positions have been observed with the 12 m telescope.