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This website displays Koha ILS usage statistics. With permission from the libraries, the following data has been collected from their installed systems. Any information not stored anonymously has been allowed by the library.

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Some numbers from the libraries sharing data
Total Largest Standard deviation Average Median
Libraries 3,533 648 - 3 -
Biblios 79,087,848 1,204,222 114,757 57,686 15,491
Authorities 86,039,867 1,935,064 150,534 62,757 5,742
Items 112,496,349 1,640,647 191,335 82,054 18,655
Patrons 12,482,496 261,211 25,878 9,105 779
Issues 328,743,279 13,438,986 903,982 239,784 3,673