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Weather and Fault Statistics

The following tables present the weather loss and fault loss for semester 96B. Although semester 96B was extended to include February 1997, these tables only use the standard August through January statistics for compatibility with earlier tables. A hard disk crash in December meant that the December statistics are not available. Full details are stored on database at the JAC. A more detailed description of how these tables are created is also available here.


Month		Avail	Extend	Primary	  %	Backup	  %

Hrs Hrs Loss Loss

August 422.5 17.8 19.5 4.6 11.5 2.7

September 464.0 28.4 19.4 4.2 18.2 3.9

October 448.0 13.2 73.2 16.3 63.7 14.2

November 456.0 9.5 196.5 43.1 177.0 38.8

December 488.0 6.8 198.0 40.6 199.5 40.9

January 464.0 14.5 134.7 29.0 126.7 27.3

Total 2742.5 90.2 641.3 23.4 596.6 21.8

Table 1: JCMT weather statistics.

Month		Avail	Total	ANT	INS	COMP	SOFT	CAR	OTH

August 422.5 60.8 0.3 55.5 1.4 2.4 0.8 0.5

September 464.0 14.7 0.0 9.7 1.5 2.9 0.0 0.6

October 448.0 6.8 0.0 1.4 3.5 0.9 0.0 1.0

November 456.0 7.6 2.1 2.5 2.2 0.2 0.3 0.3

December 488.0 20.1 0.1 0.4 0.8 10.5 8.0 0.3

January 456.0 7.1 0.4 5.3 0.3 0.9 0.0 0.3

P(hrs) 2742.5 117.1 2.9 74.8 9.7 17.8 9.1 3.0

B(hrs) 0.6 0.0 0.3 0.0 0.0 0.3 0.0

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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Last Modification Date 1997/03/12 - Last Modification Author: Graeme Watt (gdw)
Contact: Antonio Chrysostomou. Updated: Tue Aug 17 17:32:21 HST 2004

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