Z-Score per Productive Time (Z-PRO) Formula

From the article "The IMPACTT of a Patrol Officer: Evaluating Productivity Metrics," July 13, 2020.

A = an officer’s z-score for selectives, B = an officer’s z-score for traffic warnings, C = an officer’s z-score for traffic citations, D = an officer’s z-score for warrant arrests, E = an officer’s z-score for misdemeanor arrests, and F = an officer’s z-score for felony arrests. This value can be expressed as N. O = absolute value of N * (1 − prosecution rate). This value is then rated on a scale of 1 to 100 with measuring increments of 0.1. G = total on-duty minutes, H = calls for service minutes, I = follow-up time and meetings, J = officer assist time, K = number of incident reports, L = number of additional case information reports, and M = number of information or intelligence reports. All outputs are annual totals.

Source: Officer Luke Bonkiewicz, Lincoln (NE) Police Department, "The IMPACTT of a Patrol Officer: Evaluating Productivity Metrics," July 13, 2020, nij.ojp.gov:
https://nij.ojp.gov/topics/articles/impactt-patrol-officer-evaluating-productivity-metrics