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\end{tabular}  \end{table}  Typical system temperatures were between 105 K and 120 K. Typical rms noise in the resulting calibrated spectra was 0.20 K. Additionally, we mapped three regions (N56, N65 N65_2  and N77) N77_1)  that displayed strong CS emission. The map sizes were1'x1', 2'x2' and  1'x1' (N56 and N77_1) and 2'x2' (N65_2), both using a step-size of 6.12".