Shooter video games at Beaver Dam, Wisconsin, to borrow free
E
Grand theft auto V 2014
M
E
T
T
T
E
T
M
T
T
E
—
T
T
—
E
T
T
T
Copies per library (table)
Each change is stamped with the snapshot that saw it; it happened since the snapshot before (hourly for copies already moving, every 4 hours for everything else).