Lead V1
4th intercostal space to the right of the sternum
Lead V2
4th intercostal space to the left of the sternum
Lead V3
directly between leads V2 and V4
Lead V4
5th intercostal space at the midclavicular line
Lead V5
level with V4 at the left anterior axillary line
Lead V6
level with V5 at the midaxillary line