HO (thick black line), the H₂O (thin magenta “noisy” line) and the C¹⁸O(1−0) (thin magenta “smooth” line) profiles towards a) the +50  km s^-1 cloud, b) the CND, and c) the +20  km s^-1 cloud. The HO profiles have been multiplied by a factor of 10 and the channel resolution is 3.4  km s^-1. The channel resolution of the H₂O profiles is 1.0  km s^-1, and the temperature scale has been reduced by 0.4 K for clarity. The temperature scale for C¹⁸O(1−0) has been increased by 0.1 K, also for clarity.