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  1.  
  2.  
  3. N-1-1-040.70  USENET by Rick Adams* <rick@uunet.uu.net>
  4.  
  5.  
  6. From:    Brian Reid, DEC Western Research Lab, Palo Alto, CA
  7.  
  8. USENET READERSHIP SUMMARY REPORT for Oct 91
  9.  
  10.                              This            Estimated
  11.                             Sample         for entire net
  12. Sites:                       701                 40,000
  13. Fraction reporting:         1.75%                   100%
  14. Users with accounts:     159,480              9,100,000
  15. Netreaders:               33,345              1,902,000
  16.  
  17. Average readers per site:                          48
  18. Percent of users who are netreaders:            20.91%
  19. Average traffic per day (megabytes):           27.301
  20. Average traffic per day (messages):             11318
  21. Traffic measurement interval:    last              28 days
  22. Readership measurement interval: last              75 days
  23.  
  24.  
  25. From: Rick Adams, UUNET
  26.  
  27. 154597 articles, totaling 295.013223 Mbytes (364.068687 including headers),
  28. were submitted from 15531 different Usenet sites by 41378 different
  29. users to 1810 different newsgroups for an average of 21.072373 Mbytes
  30. (26.004906 including headers) per day.
  31.  
  32.  
  33.                   Article          Total
  34.     Category    Count      Mbytes    Percent      Mbytes
  35.     alt          27123     81.695823     27%     94.270979
  36.     rec          50196     72.600602     24%     94.479340
  37.     comp          33825     70.423129     23%     85.366482
  38.     soc          16288     29.252433      9%     37.073986
  39.     clari           5421     15.179052      5%     18.842472
  40.     talk           7156     14.014362      4%     17.784294
  41.     misc           7637     13.756868      4%     17.183408
  42.     bit           9823     13.183029      4%     18.035422
  43.     sci           7167     12.482247      4%     15.852616
  44.     fj           4356     10.961571      3%     13.190683
  45.     news           1717      4.633786      1%      5.456010
  46.     bionet           1057      2.709215      0%      3.133768
  47.     vmsnet            604      1.909621      0%      2.162510
  48.     gnu            925      1.893587      0%      2.318422
  49.     inet            165      0.393901      0%      0.459703
  50.     biz            234      0.367350      0%      0.484196
  51.     eunet            269      0.349008      0%      0.475649
  52.     u3b              1      0.007787      0%      0.008128
  53.     comps              2      0.001590      0%      0.002661
  54.     bitnet              2      0.001154      0%      0.002229
  55.     unix-pc              1      0.000822      0%      0.001259
  56.  
  57.      Propagation Delay to uunet
  58.  
  59.          No. of   Cumulative        Hourly Breakdown of
  60. First Day
  61.     Days Articles Percent            Hours    Articles Percent
  62.      <0    1280      0% (Time Warp)         -1         799      0%
  63.       0       3      0%              0           3      0%
  64.       1  143103     93%              1       54574     35%
  65.       2    5626     97%              2       23195     51%
  66.       3    1912     98%              3       13772     60%
  67.       4     802     99%              4       11191     67%
  68.       5     508     99%              5        8013     72%
  69.       6     241     99%              6        5671     76%
  70.       7     144     99%              7        4270     78%
  71.       8     111     99%              8        3530     81%
  72.       9      52     99%              9        3272     83%
  73.      10      28     99%             10        2243     84%
  74.      11      14     99%             11        1926     86%
  75.      12      24     99%             12        1543     87%
  76.      13      11     99%             13        1345     87%
  77.      14      12     99%             14        1084     88%
  78.      15       5     99%             15        1055     89%
  79.      16       4     99%             16         932     89%
  80.      17       0     99%             17         887     90%
  81.      18       3     99%             18         854     91%
  82.      19       3     99%             19         830     91%
  83.      20       2     99%             20         722     92%
  84.      21       1     99%             21         703     92%
  85.      22       1     99%             22         555     92%
  86.      23       1     99%             23         488     93%
  87.      24       1     99%
  88.      26       1    100%
  89.  
  90. Average delay per article is 0.3 days
  91.  
  92. Article Size Distribution:
  93.                % of      % of                   % of     % of
  94. Kbytes  Count Artrticles   Bytes  Kbytes  Count Articles   Bytes
  95.     1  42974    27.8%     9.1%        9    428     0.3%     1.0%
  96.     2  71398    46.2%    28.6%       10    316     0.2%     0.8%
  97.     3  21894    14.2%    14.8%       11    229     0.1%     0.7%
  98.     4   7663     5.0%     7.4%       12    177     0.1%     0.6%
  99.     5   3466     2.2%     4.3%       13    131     0.1%     0.5%
  100.     6   1849     1.2%     2.8%       14    144     0.1%     0.5%
  101.     7   1010     0.7%     1.8%       15    128     0.1%     0.5%
  102.     8    614     0.4%     1.3%    >= 16   2176     1.4%    25.3%
  103.  
  104.  
  105.         Historical Traffic Data
  106.  
  107. 14 days                 Mbytes         Posting        Active
  108. ending     Articles    per day     Sites     Users    Groups
  109. 910422      113123      14.840     11217     31208      1531
  110. 910528      105579      14.863     12068     30202      1545
  111. 910622      117198      16.602     12563     31994      1539
  112. 910708      108742      16.066     12265     30547      1602
  113. 910722      124152      17.924     12929     32790      1631
  114. 910808      118350      16.991     12940     31861      1602
  115. 910822      127466      18.217     13634     33731      1651
  116. 910909      124208      17.546     13503     33411      1657
  117. 910923      137682      19.600     14389     36719      1740
  118. 911008      137225      20.215     14565     37797      1732
  119. 911023      142161      20.124     14572     38388      1758
  120. 911111      154597      21.072     15531     41378      1810
  121.  
  122.  
  123. *UUNET Communications Services, UUNET
  124.