Fig. 5From: Appropriate threshold levels of cardiac beat-to-beat variation in semi-automatic analysis of equine ECG recordingsThe hourly frequency of arrhythmias during the 24-h ECG recordings at rest. a Sinoatrial (SA) blocks. b Second degree atrioventricular (AV) blocks. c Supraventricular premature complexes (SVPC). d Ventricular premature complexes (VPC). Bars indicate mean ± SEM. Note the different scalesBack to article page