20_15-41-04_ecg 4 1000 29994 20_15-41-04_ecg.dat 32 6990.5(0)/mV 32 0 -18260 21212 0 I 20_15-41-04_ecg.dat 32 6990.5(0)/mV 32 0 39557 32721 0 II 20_15-41-04_ecg.dat 32 6990.5(0)/mV 32 0 -54833 42211 0 V3 20_15-41-04_ecg.dat 32 6990.5(0)/mV 32 0 -45839 57835 0 V4