20_15-38-38_ecg 4 1000 29993 20_15-38-38_ecg.dat 32 6990.5(0)/mV 32 0 -6899 32954 0 I 20_15-38-38_ecg.dat 32 6990.5(0)/mV 32 0 16171 61178 0 II 20_15-38-38_ecg.dat 32 6990.5(0)/mV 32 0 -16337 23449 0 V3 20_15-38-38_ecg.dat 32 6990.5(0)/mV 32 0 -2801 2386 0 V4