The Corner Station is the only building that requires a continuous instrument air supply (under normal, non-turbo pumping conditions) as the site pneumatic LN2 liquid level control valves and HVAC damper adjusters have been converted to electric.  Only the pneumatic 44" gate valves in the LVEA, GV5, GV6, GV7 and GV8 still need 24/7 pneumatic air.  As such, attention to this one supply has waned.  The pressure is monitored by the CDS system but the dryness must be measured periodically.

So, today I measure the dew point as sampled near GV5 to be -24C.