18_10-30-19_ecg 4 1000 29994 18_10-30-19_ecg.dat 32 6990.5(0)/mV 32 0 32560 21074 0 I 18_10-30-19_ecg.dat 32 6990.5(0)/mV 32 0 71463 60902 0 II 18_10-30-19_ecg.dat 32 6990.5(0)/mV 32 0 -71522 29422 0 V3 18_10-30-19_ecg.dat 32 6990.5(0)/mV 32 0 -74690 22927 0 V4