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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 2,780 139 - 2 -
Biblios 76,150,399 1,204,222 112,430 57,213 15,615
Authorities 82,868,836 1,935,064 148,314 62,261 5,679
Items 107,033,063 1,525,084 184,477 80,416 18,854
Patrons 12,180,292 259,145 26,036 9,151 804
Issues 319,284,360 13,437,773 931,278 239,883 4,001