Example ECGs.

<p>An ECG with a small difference and two ECGs with outlier single-deltas (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0166925#pone.0166925.g003" target="_blank">Fig 3</a>). The left ECG (A) represents a normal ECG with small differences, middle ECG (B) representing an example with a large difference in the J-T_peak and T_peak-T_end intervals and the right ECG (C) representing an example of a moderate difference (~30 ms) in QTc. The solid vertical lines refer to semi-automatic measurements and the dashed lines to fully automatic.