23_13-37-37_ecg 4 1000 29994 23_13-37-37_ecg.dat 32 6990.5(0)/mV 32 0 -7403 59235 0 I 23_13-37-37_ecg.dat 32 6990.5(0)/mV 32 0 -49087 58004 0 II 23_13-37-37_ecg.dat 32 6990.5(0)/mV 32 0 139 61171 0 V3 23_13-37-37_ecg.dat 32 6990.5(0)/mV 32 0 8881 50625 0 V4