Help needed - reading proxy server bandwidth reports (Calamaris)

Our Proxy server uses Calamaristo read the log files and produce reports on our users internet usage. Mostly, they are very helpful, but there is one report which I am stuggling to interpret.

It is a report of “Performance in 1 hour steps” (see below) and what I am stuggling to understand is the meanings of the various column headings:


# Performance in 1 hour steps
                                incomin    hit    miss   direct sibling  fetch  
date             request   Byte  kB/sec  kB/sec  kB/sec  kB/sec  kB/sec  kB/sec 
--------------- --------- ----- ------- ------- ------- ------- ------- ------- 
16.Mar 09 17:00      7683   71M    9.35   17.25    8.77    8.68     -       -   
16.Mar 09 18:00      9072   63M    6.87   36.58    5.93    5.90     -       -   
16.Mar 09 19:00      3564   29M    7.43   22.55    6.69    6.57     -       -   
16.Mar 09 20:00      1066 5537K    2.26  153.17    1.45    1.45     -       -   
16.Mar 09 21:00       853 2373K   17.09     -     23.03   23.03     -       -   
16.Mar 09 22:00       884 1591K    5.33     -      0.50    0.50     -       -   
16.Mar 09 23:00       864 1521K    9.36    2.69    0.68    0.69     -       -   
17.Mar 09 00:00       841 1475K   14.64     -      0.95    0.95     -       -   
17.Mar 09 01:00       843 1478K   14.60     -      0.66    0.66     -       -   
17.Mar 09 02:00       841 1475K   14.96     -      1.02    1.02     -       -   
17.Mar 09 03:00       842 1476K   14.32     -      1.01    1.01     -       -   
17.Mar 09 04:00       843 1478K   14.62     -      1.37    1.37     -       -   

<snip>

17.Mar 09 13:00     17353  122M    5.23   37.81    4.59    4.75     -       -   
17.Mar 09 14:00     21642  195M    6.61   40.77    5.50    5.72     -       -   
17.Mar 09 15:00     51005  476M    6.96   74.29    5.79    5.96     -       -   
17.Mar 09 16:00     19739  222M    8.25  112.23    6.90    6.90     -       -   
17.Mar 09 17:00     10613   70M    5.16   33.63    4.44    4.68     -       -   
17.Mar 09 18:00       918 1817K    1.61     -      0.33    0.33     -       -   
17.Mar 09 19:00       843 1477K   14.33     -      0.84    0.84     -       -   
17.Mar 09 20:00       873 2865K   23.28     -     64.94   64.94     -       -   
17.Mar 09 21:00       845 1482K   14.69     -      1.60    1.60     -       -   
17.Mar 09 22:00       840 1474K   15.06     -      6.17    6.17     -       -   
17.Mar 09 23:00       841 1476K   14.89     -      3.57    3.57     -       -   
18.Mar 09 00:00       841 1476K   15.10     -      2.66    2.66     -       -   
18.Mar 09 01:00       846 1485K   14.75     -      2.51    2.51     -       -   



Any/all help gratefully appreciated…

Grim