13_20-16-27_ecg 4 1000 29994 13_20-16-27_ecg.dat 32 6990.5(0)/mV 32 0 50798 29331 0 I 13_20-16-27_ecg.dat 32 6990.5(0)/mV 32 0 -389 27527 0 II 13_20-16-27_ecg.dat 32 6990.5(0)/mV 32 0 -19550 39197 0 V3 13_20-16-27_ecg.dat 32 6990.5(0)/mV 32 0 -5828 33420 0 V4