Release-1 which is a subset of four software releases cited from Wood for Tandem Computers Company. It was tested for 20 weeks () in which 100 software failures () were found and 10000 CPU hours () were consumed.
Release-2 from Tandem Computers Company. It was tested for 19 weeks () in which 120 software failures () were found and 10272 CPU hours () were consumed.
Release-3 from Tandem Computers Company. It was tested for 12 weeks () in which 61 software failures () were found and 5053 CPU hours () were consumed.