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Weather and Fault Statistics for Semester 99B

The following tables present the weather loss and fault loss for semester 99B. A more detailed description of how these tables are created is also available here.

  Month    Available    Extended   ---- Lost to weather ----
                                    Primary   %    Backup   %

August        504.0     26.1        166.1   33.0   150.6  29.9
September     477.0     12.1         71.0   14.9    40.3   8.4
October       474.8     16.2        110.5   23.3    70.5  14.8
November      471.5     12.4        205.3   43.5   151.8  32.2
December      394.0     15.8        194.2   49.3   172.5  43.8
January '00   429.0     28.9        138.5   33.0    96.9  23.1
Totals       2741.3    111.7        885.6   32.3   682.6  24.9

Table 1: JCMT weather statistics.

Month    Available   Lost    ANT    INS    COM    SOF    CAR     OTH

August     504.0     15.9     0.5    8.8    0.0    2.8    1.0    1.9
September  477.0     49.4    31.0    4.9    0.2    4.4    0.0    9.0
October    474.8     29.9     3.0   25.7    0.0    0.2    0.0    1.0
November   471.5     65.4     0.0   63.9    0.0    1.4    0.0    0.2
December   394.0      5.9     0.5    0.0    0.0    1.9    1.5    2.0
January'00 420.0     14.0     0.3    8.6    2.4    0.9    0.3    1.0
P(hrs)    2741.3    179.6    35.3  111.9    2.6   11.6    2.8   15.1
B(hrs)               18.5     0.5   14.1    0.5    0.9    0.0    2.5

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.