We have known for some time that the indicated level of CP4's LN2 fluctuates too rapidly to be physically likely and is more probably due to some transient GN2 phenomenon which effects the validity of the differential transducer.  Occasionally this indicated level will deviate enough as to enter into the alarm region and will then get the attention of the CR operator (Corey just asked about this).  I guess we'll need to investigate this more seriously.  Chandra is aware of this issue but is gone until next week.  

The Vacuum Team gets notified via automated text messages of these alarms.  

Until this gets resolved, CR operators only need contact the Vacuum Team Members if CP4 stays in alarm for a prolonged period (say hours).