Weather and Fault Statistics for
Semester 95A
The following tables present the weather loss and fault loss for semester 95A. Full details are stored on
database at the JAC and interested readers are referred there for further information. The total
clear time lost from primary programmes for semester 95A is 6.1%.
Month Avail Extend Primary % Backup %
Hrs Hrs Loss Loss
February 444.0 30.2 89.8 20.2 54.5 12.3
March 480.0 25.3 70.8 14.8 60.0 12.5
April 480.0 22.3 115.7 24.1 42.0 8.8
May 473.5 23.3 67.0 14.1 25.5 5.4
June 456.0 25.3 16.0 3.5 0.0 0.0
July 497.0 51.8 47.80 9.5 18.5 3.7
Total 2830.5 178.2 406.3 14.4 200.5 7.1
Table 1: JCMT weather statistics.
Month Avail Total ANT INS COMP SOFT CAR OTH
February 444.0 18.9 1.6 12.2 0.3 1.8 0.8 2.3
March 480.0 33.1 1.4 9.6 5.1 2.0 14.4 0.6
April 480.0 17.9 0.8 5.5 2.5 2.0 1.1 6.1
May 473.5 25.6 3.0 12.9 4.5 1.6 1.7 2.0
June 456.0 28.8 8.4 8.8 2.5 0.6 1.4 7.2
July 497.0 23.2 2.8 9.9 0.8 1.4 0.6 7.8
P(hrs) 2830.5 147.5 18.0 58.9 15.7 9.4 20.0 26.0
B(hrs) 4.4 0.3 1.9 0.0 0.0 0.3 2.0
Table 2: JCMT fault statistics. 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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