[evlatests] P-band System Temperatures

[Rick Perley]

While visiting last week, Tracy asked about the P-band system 
temperatures.  I haven't looked at these derived values for a very long 
time (if ever), so I reviewed the calculated values, using the data 
taken the weekend before last.

Of the 27 antennas in the array (ea13 was out),

1)  18 are giving an utterly unrealistic value for the system 
temperature -- 10 to 20 K.  These antennas are:

1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 14 15 16, 17, 21 22 27 28.

2) 7 antennas give 'reasonable' values (about 200K):  12 18 20 23 24 25 26

3) Two antennas have zero PDif (ea09) or utterly random PDif (ea19).

I suppose the 18 'cold' antennas have probably unit values in the 
database for the Tcal values.

It would be good if we could get these monitor data up to realistic values.

Rick