Circulation Data: Music Library

Circulation Data: Music Library

Zack LaneReCAP Coordinator

July 2012

ReCAPColumbia University

Looks at Music Library circulation activity Is only one measure of collection usage Presents data both Music specific and

system-wide Circulation Desk uses several happening

locations: Music, Music Reserves, Butler, BorrowDirect, and HSL

Music Library data is available from the implementation of Voyager, July 2003

No circulation data for non-circulating collections

Music Library Circulation Data



Music Library Happening Location Data from Music Library Happening Location

only (includes Reserves) Five primary types of circulation activity:

charge, discharge, renewal, recall and hold

Renewals and recalls are done in the OPAC Happening Location, dynamically by patrons themselves

Non-Music Offsite collections charged in Butler Happening Location


0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

FY03/04 FY04/05 FY05/06 FY06/07 FY07/08 FY08/09 FY09/10 FY10/11 FY11/12

Comparison of Primary Types of Circulation Activity at Music Library

Sum of ALL CHARGES Sum of DISCHARGES Sum of ALL RENEWALS Sum of ALL RECALLS Sum of ALL HOLDS


Observations Total volume of charges has declined most

years since FY04 Gap between charges and discharges may

indicate some books are returned to other departments

39.4% decline from FY04 to FY12 Compare to 27.4% decline system-wide) Volume of discharge predictably mirrors

charges Upswing in FY08-FY09


34,208

31,895

27,19027,863

25,456

27,92128,837

24,095

20,715

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000


Total CHARGE Activity by Fiscal Year at Music Library


Music Circulation by Patron Group Line charts represent usage by year and

month Patron Group definitions have changed:

◦ Adjunct faculty, in 2008 grad students were given primary group OFF instead of GRD

Pie charts break down data for FY12 only Bar chart compares patron group charges

for each fiscal year


0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

16,000

18,000


CHARGE Activity by Patron Group at Music Library

GRD OFF REG VIS


0

500

1,000

1,500

2,000

2,500

Monthly CHARGE Activity by Patron Group at Music Library

GRD OFF REG VIS


GRD17.05%

OFF33.35%

REG48.66%

VIS0.94%

FY12 Breakdown of CHARGE Activity by Patron Group


0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Proportion of CHARGE Activity by Patron Group


Observations Almost 1/2 of all charges are to

undergraduate students in FY12 Significant decline for faculty Increase in graduate charges in FY08-FY10

Are changing formats affecting usage? More meaning may be extracted from

collection data


Circ Activity by Collection Data for all transactions in the Music Happening

Location Non-Music Offsite charges are placed in the Butler

Happening Location Data unavailable for non-circulating collections

Five pie charts:◦ Collective ◦ GRD = Graduates◦ OFF = Faculty◦ REG = Undergraduates◦ VIS = Visitors


Recordings38.72%

Music Monographs20.07%

Reserves17.90%

Scores11.19%

Music Videos6.19%

Offsite Music4.31%

Everything Else0.45%

Reference0.43%

Offsite Other0.40%

Folios0.29%

Case0.06%

FY12 CHARGE Activity by Collection at Music Library



Recordings35.90%

Scores12.34%

Offsite Music5.38%

Reserves4.33%

Music Videos3.23% Offsite Other

0.68%Folios0.62%


Reference0.06% Case

0.03%

FY12 GRD CHARGE Activity by Collection at Music Library


Recordings43.64%


Scores13.75%

Reserves8.21%

Offsite Music7.24%

Music Videos4.11%

Reference1.22% Everything

Else0.97%

Offsite Other0.56%

Folios0.49%

Case0.16%

FY12 OFF CHARGE Activity by Collection at Music Library


Recordings36.78%

Reserves29.63%


Scores8.95%

Music Videos8.75%

Offsite Music1.82%

Offsite Other0.18%


Folios0.05%

Reference0.04%

FY12 REG CHARGE Activity by Collection at Music Library



Recordings15.38%

Scores14.87%

Offsite Music10.26%

Offsite Other1.03%

Music Videos1.03%


Reserves0.51%

FY12 VIS CHARGE Activity by Collection at Music Library

System-wide circulation statistics are available for both on campus and offsite collections

Circulation data are accessible to all staff Offsite collections can be identified by CLIO

location format off,xxx. System-wide data is available from July

2003, the date of Ex Libris Voyager implementation

System-wide Circulation Data


https://www1.columbia.edu/sec/cu/libraries/inside/clio/statistics/circulation/xls/circ_all_xls.html

Comparison of on campus and offsite collection charges by volume

On campus charge volume declined by 27.4% between FY04 and FY12

On campus charges have declined every year since FY04

Offsite charge volume increased 121.3% between FY04 and FY12

N.B. On campus collection size declines each year; offsite collections grow each year

On Campus vs. Offsite Charges



13,326 14,951 17,615 21,383 25,083 28,029 27,524 28,735 29,497

557,501 552,788

509,556

483,905

449,135 441,188 437,064415,987

404,690

0

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200,000

300,000

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600,000


CHARGES: Offsite vs. On Campus by Fiscal Year

Offsite On Campus

Monthly charges of both on campus and offsite collections are in phase with the academic calendar

Peaks in the middle of Fall and Spring terms The pattern of offsite charges is more

apparent when viewed alone

Monthly On Campus vs. Offsite Charges



0

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CHARGES: Offsite vs On Campus by Month

Offsite On Campus


0

500

1,000

1,500

2,000

2,500

3,000

3,500

CHARGES: Offsite by Month

On campus and offsite charges can be compared using a ratio

The ratio of offsite to on campus increased from FY04 to FY012

Offsite collections are accounting for proportionally more activity

On Campus vs. Offsite Charges



2.33%

2.63%

3.34%

4.23%

5.29%

5.97% 5.92%

6.46%

6.79%

0.00%

1.00%

2.00%

3.00%

4.00%

5.00%

6.00%

7.00%

8.00%


CHARGES: Offsite % of Total

Chart compares total volume of charges to renewals for Offsite collections

Graduate students and Faculty request more Offsite collections than Undergraduates

Graduate students and especially Faculty have higher renewal/charge ratios

Over time, these two patron groups tend to renew more than charge

CUL may expect to see steady or decreasing request volume as a result

Charges vs. Renewals



0

5,000

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45,000


Circulation of OFFSITE Collections: Charges vs Renewals

Offsite CHARGES Offsite RENEWALS


0

100,000

200,000

300,000

400,000

500,000

600,000


Circulation of ON CAMPUS Collections: Charges vs Renewals

On Campus CHARGES On Campus RENEWALS


1.40

0.67

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.60


CHARGE to RENEWAL Ratio

Offsite On Campus

More information about data sets can be found on the ReCAP Data Center website

Primary data categories include: accession, retrieval, delivery and circulation

Tailored data sets and analysis will be provided to staff via the ReCAP Coordinator

Please see the main ReCAP website for general information about CUL procedures and systems

More Data Available


https://www1.columbia.edu/sec/cu/libraries/bts/recap/data.html

https://www1.columbia.edu/sec/cu/libraries/bts/recap/index.html

Circulation Data: Music Library

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