CONSUMERS AND PRODUCERS FOR EACH OF TEN POLICE SERVICES, HALF 'DIRECT' AND HALF 'AUXILIARY' ARE ARRAYED ON A MATRIX. EACH CELL IN A MATRIX IDENTIFIES A DYADIC RELATIONSHIP BETWEEN ONE PRODUCER (POLICE AGENCY) AND ONE CONSUMER (SERVICE AREA) FOR A PARTICULAR SERVICE. WITHIN EACH CELL OF A MATRIX AS MANY AS SIX SERVICE CODE INDICATORS APPEAR TO DESCRIBE RELATIONSHIPS BETWEEN A PRODUCER AND A CONSUMER. THE FIRST LETTER DESCRIBES THE PROVISION OF POLICE SERVICES BY THE PRODUCER TO THE CONSUMER AS IRREGULAR, REGULAR, COORDINATED, OR ALTERNATED. THE SECOND CODE DESCRIBES THE RELATIONSHIP AS WRITTEN, UNWRITTEN, OR OWN. THE THIRD CODE INDICATES WHETHER OR NOT THE SERVICE IS PRODUCED FOR A FEE OR BY OWN. THE LAST THREE CODES ARE USED ONLY TO DESCRIBE 'ALTERNATE' RELATIONSHIPS. THE FOURTH CODE NOTES EXCLUSIVE OR NON-EXCLUSIVE SERVICE, THE FIFTH CODE IDENTIFIES THE TYPE OF ALTERNATE PRODUCTION OF SERVICE, AND THE FINAL CODE INDICATES THE LOCATION OF THE ALTERNATE SERVICE PROVISION. THE POLICE SERVICES DESCRIBED ARE BURGLARY INVESTIGATION, HOMICIDE INVESTIGATION, GENERAL AREA PATROL, TRAFFIC PATROL, TRAFFIC INVESTIGATION, DISPATCH, TRAINING, DETENTION, AND CRIME LAB ANALYSIS (BOTH CHEMICAL AND NARCOTICS). FOR EACH SERVICE 23 STRUCTURAL MEASURES APPEAR BELOW THE MATRIX. FOR AN EXPLANATION OF THESE MEASURES, SEE NCJ-36781.