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'.ell ShotSpotter Flex'SERVICES AGREEMENT 20 ShotSpotter - Definition of Key Terms The ShotSpotter Gunshot Location System will provide data for correct detection and accurate location for ninety percent (90%) of detectable (outdoor, unsuppressed) community gunfire which occurs within a coverage area, the "Coverage Area, provided the measurement is Statistically Significant, as defined below. This performance rate shall be calculated as a percentage as follows: Performance Rate — _NumberAcc_urateiyLocated �NumberAccuratelyLocated+Numbe Noti)etected + Numbe Mislocated) where the "Performance Rate" is a number expressed as a percentage, "NumberAccuratelyLocated' is the number of "Gunfire Incidents" occurring within the Coverage Area during the specified period for which the ShotSpotter produced an Accurate Location, NumberMislocated is the number of Verified Incidents (a "Verified Incident" is an incident where Customer has physical or other credible evidence that gunfire took place) for which the ShotSpotter produced an inaccurate location (i.e., a Mislocated Incident), and NumberNotOetected is the number of Verified Incidents for which the ShotSpotter failed to report a location at all (Le., Missed Incidents). An "Accurate Location" shall mean an :incident located by the ShotSpotter to a latitude/longitude coordinate that lies within a 25 -meter radius of the confirmed shooters location (25 meters = approximately 82 feet). "Detectable Gunfire" incidents are unsuppressed discharges of ballistic firearms which occur fully outdoors in free space (i.e. not in doorways, vestibules, windows, vehicles, etc.) using standard commercially available rounds of caliber greater than .25. ShotSpotter Review Period is measured as the period commencing when the Incident Review Center (IRC) receives the alert and the first audio download to the time it is published to the Customer ShotSpotter performance is guaranteed after a "Statistically Significant" set of incidents has been detected in accordance with timeframes set forth herein and following DQV and commercial system acceptance. Because the ShotSpotter is designed to cover the indigenously -occurring, community - generated gunfire (which is typically well distributed throughout the Coverage Area), performance should not be construed to mean that 90% of gunfire fired at any given location within the Coverage Area will be detected and located within the guaranteed accuracy. The ShotSpotter Gunshot Location system is not a "point protection" system and is therefore not designed to consistently detect gunfire at every single location within the Coverage Area, but rather to Accurately Locate 90% of the Detectable Incidents in aggregate throughout the entire Coverage Area. There may be certain locations within the Coverage Area where obstacles and ambient noise impede and/or overshadow the propagation of acoustic energy such that locating the origin at those positions is inconsistent or impossible. The Performance Rate calculation is thus specifically tied to the Community Gunfire across the entire Coverage Area. Statistically Significant shall be defined as measurements and calculations shall be performed as follows: (a) Across an entire Coverage Area; (b) Aggregating over a period of at least 30 days under weather conditions seasonally normal for the area; and (c) Provided that the total number of gunfire incidents being counted is equal to or greater than: (i) thirty (30) incidents for systems of up to three (3) square miles of Coverage Area, or (ii) ten (10) incidents multiplied by the number of square miles of Coverage Area for systems where one or more Coverage Areas are three (3) square miles or larger. REV:06-19-18 MI Page 20 of 20 ATTY/AG R.2018.131 /ShotSpotter