Microcomputer-controlled plotting of environmental health data

A general microcomputer program has been developed which facilitates the preparation of finished plots of geographical and temporal variations in such data as: the concentrations of suspended airborne particulate matter and of metallic and organic components detected in the particulate; the incidences of several kinds of respiratory illnesses and symptoms; epidemiological information obtained from physicians, hospitals, pharmacies, and schools. Examples of plots produced by the program, detailed explanations of how it works and a complete program listing are included.