Figure 1. Example of an electrocardiogram (ECG) report. Alphanumeric values (demographic information, ECG parameter values, and interpretation) are located in the upper part of the report. Waveform data are given as time-series graphs with a grid, covering the middle and lower part of the report. One grid unit (1 mm × 1 mm square) corresponds to 0.1 mV × 0.04 seconds.