Figure 1: ECG Strip[1]
ST elevation and ST depression are forms of ST segment abnormalities caused by myocardial ischaemia or infarction. The ST segment is the section of the ECG between the end of the S-wave and the beginning of the T-wave. ST elevation occurs when the ST segment is elevated in comparison to the PR segment. Specifically, the ST segment represents "the interval between ventricular depolarization and repolarization.''[2]
See ST Segment Abnormalities for Figure 2 format explanation
Figure 2: ECM Analysis, Record e0114, Lead V4[4][5] The ST segment is a lighter shade of blue than the PR segment on the ECM, indicating more positive amplitude and the presence of ST elevation.