MELSRV MEDLINE AND MEDLINE DATABASES Z39.50 SERVER STATISTICS
Time period: 10/06/01 through 10/12/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of MEDLINE AND MEDLINE databases:
Number of
Searches Records Presented
________ _________________
MED (current) 39,906 2,103,410
MED90 7,724 117,551
MED85 6,042 44,557
MED80 5,400 20,758
MED75 5,120 15,138
MED66 5,155 16,921
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,824 54,632
2-4 a.m. 753 25,728
4-6 a.m. 358 17,584
6-8 a.m. 1,126 32,609
8-10 a.m. 4,940 186,125
10-12 a.m. 11,118 345,394
12-2 p.m. 12,704 390,170
2-4 p.m. 15,001 488,721
4-6 p.m. 10,607 393,329
6-8 p.m. 5,172 173,633
8-10 p.m. 3,588 134,049
10-12 p.m. 2,156 76,361
__________ _____________ _________________
Total: 69,347 2,318,335
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 568
Davis 526
Irvine 67
Los Angeles 760
Riverside 65
San Diego 525
San Francisco 863
Santa Barbara 21
Santa Cruz 22
Lawrence Berkeley 7
Lawrence Livermore 0
Los Alamos 0
MELWEB 0
Searchlight 9,382
Other - UC 56,380
Other-Network UC 161
_____
69,347
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,943
Davis 8,104
Irvine 690
Los Angeles 5,443
Riverside 956
San Diego 4,991
San Francisco 12,969
Santa Barbara 93
Santa Cruz 321
Lawrence Berkeley 8
Lawrence Livermore 0
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 2,278,117
Other-Network UC 3,700
_____
2,318,335
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 0.9
Standard deviation in seconds 3.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 MEDLINE AND MEDLINE Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:50
Average session length (minutes:seconds) 17:08
Longest session recorded (minutes:seconds) 246:36
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 825.3
Retrievals per search - standard deviation 13040
Percent of searches completed with 0 results 33.8%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 69,347 13.7%
PRESENT 406,348 80.2%
INIT or CLOSE 30,995 6.1%
OTHER 142 0.0%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
JOURNAL 4,818 5.0% 1,923 39.9% 4 777.4 3578.2
PERSONAL AUTHOR 20,833 21.5% 6,121 29.4% 7 78.0 647.0
TITLE WORD 7,999 8.3% 3,148 39.4% 3 295.2 3671.1
SUBSET 156 0.2% 50 32.1% 18 214.2 789.2
SUBJECT WORD 93 0.1% 55 59.1% 20 195.3 530.8
SUBJECT 1,774 1.8% 953 53.7% 19 1896.9 13355.8
EXACT SUBJECT 3,188 3.3% 940 29.5% 31 625.8 4454.9
MAJOR SUBJECT 134 0.1% 52 38.8% 25 74.0 170.1
EXACT MAJOR SUBJ 226 0.2% 55 24.3% 29 277.0 943.1
EXACT TITLE 929 1.0% 499 53.7% 1 33.3 143.6
TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 939 1.0% 280 29.8% 424 2012.8 4187.6
MAJOR TREE NUM 0 0.0% 0 0.0% 0 0.0 0.0
CAS 47 0.0% 21 44.7% 21 29.2 38.4
KEYWORD 40,772 42.1% 14,171 34.8% 20 1841.2 20734.8
DATE 1,660 1.7% 485 29.2% 9 146.2 868.5
LANGUAGE 4,930 5.1% 1,686 34.2% 27 525.2 3056.9
UNIQUE ID 211 0.2% 126 59.7% 1 1.0 0.0
ADDED 1,112 1.1% 435 39.1% 7 17.9 37.7
PUB TYPE 2,332 2.4% 555 23.8% 23 182.6 1614.8
AUTHOR AFFIL. 559 0.6% 279 49.9% 9 222.1 1821.9
CHEMICAL NAME 1 0.0% 0 0.0% 5 5.0 0.0
EXACT CHEMICAL 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,680 3.8% 1,318 35.8% 23 785.0 3852.1
AGE 120 0.1% 34 28.3% 31 195.8 631.1
ISN 4 0.0% 1 25.0% 1 1.0 0.0
ARTICLE 173 0.2% 48 27.7% 32 492.2 2999.8
XXS 97 0.1% 41 42.3% 10 45.1 104.2
XMXS 31 0.0% 13 41.9% 12 167.2 369.6
XS 2 0 0.0% 0 0.0% 0 0.0 0.0
MXS 2 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 54 0.1% 40 74.1% 9 30.5 38.4
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 19,084 27.5% 6,851 35.9% 7 279.2 2187.4
Single 50,263 72.5% 16,616 33.1% 17 1599.4 18643.1
PRESENT commands, by type:
MARC 27.8%
OPAC 29.9%
SMDmm/dd srv.med MELSRV MEDLINE AND MEDLINE DATABASES Z39.50 SERVER STATISTICS