Weather and Fault Statistics for
Semester 94B
The following tables present the weather loss and fault loss for semester 94B. Full details are stored on
database at the JAC and interested readers are referred there for further information. The total
clear time (including backup time) lost for semester 94B is 4.7%.
Month Avail Ext Primary % Backup %
Loss Loss
August 493.0 24.3 110.1 22.3 5.0 1.0
September 416.0 7.9 154.5 37.1 8.0 1.9
October 496.0 18.1 40.5 8.2 10.5 2.1
November 480.0 23.5 189.7 39.5 4.0 0.8
December 477.5 19.9 17.0 3.6 0.0 0.0
January 496.0 34.2 69.8 14.1 1.8 0.4
Total 2858.5 127.9 581.6 20.3 29.3 1.0
Table 1: JCMT weather statistics for semester 94B. Values are in hours. First column is total hours available; 2nd column is exteneded hours used; 3rd & 4th column refer to primary programme; 5th & 6th column refer to backup programme.
Month Avail Total ANT INS COMP SOFT CAR OTH
August 493.0 21.3 8.0 8.9 1.0 0.8 0.0 2.7
September 424.0 15.4 3.6 10.7 0.0 0.0 0.2 0.9
October 496.0 30.2 3.1 17.5 4.0 4.8 0.0 0.8
November 480.0 18.4 3.8 8.9 5.0 0.0 0.0 0.6
December 477.5 12.8 2.4 6.9 0.0 1.2 0.0 2.4
January 496.0 9.6 2.3 4.0 1.7 0.8 0.9 0.0
P(hrs) 2866.5 107.7 23.2 56.9 11.7 7.6 1.1 7.4
B(hrs) 0.7 0.1 0.6 0.0 0.0 0.0 0.0
Table 2: JCMT fault statistics for semester 94B. Wherever possible the faults are categorised into ANT = antenna; INS = instrument; COMP = computer hardware; SOFT = software; CAR = carousel; with the remainder going to OTH = other. The figures in the table may not appear to add up correctly due to rounding in the original program. P defines the time lost from Primary projects.
The category B(hrs) is the time lost to Backup projects.
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