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Consultants' Final Report - Page 3 <br />three conditions: First, we could expect to have any public data held by the Police <br />Department or the City Manager's Office; second, we could expect the full co- <br />operation of the Police Department and the City Manager's Office; and third, the <br />City would accept any and all findings regardless of their implications for past, <br />present, or future policy. These conditions were accepted in principle and <br />honored in practice. We enjoyed an extraordinary degree of autonomy and co- <br />operation from both the Police Department and the City Manager's Office. <br />In November, 1990, we. began working with the Police Department to <br />define the parameters of the crime data to be analyzed. The complete set of <br />crime reports for 1981-90 were eventually downloaded and read into a statistical <br />analysis system. The reliability of these data was ensured by comparing samples of <br />the data downloaded from the Police Department computers with data archived at <br />the California Bureau of Criminal Statistics and Federal Bureau of Investigation. <br />Satisfied that the reliability of our data was nearly perfect, in January, 1991, we <br />began the arduous task of measuring the absolute and relative distances between <br />crime events. We were eventually able to measure the relevant distances for a <br />subset of 34,079 crimes to within 40 feet of the actual occurrence with 99 percent <br />confidence. In late January through April, 1991, these distances were analyzed in <br />various models and with various methods. The resuIts of these analyses show that: <br />EVER00343 <br />