Will Two Do? Varying Dimensions in Electrocardiography: The PhysioNet/Computing in Cardiology Challenge 2021 1.0.3

File: <base>/training/ningbo/g14/JS23784.hea (763 bytes) 
JS23784 12 500 5000
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JS23784.mat 16x1+24 1000.0(0)/mV 16 0 -24 15534 0 aVF
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JS23784.mat 16x1+24 1000.0(0)/mV 16 0 161 -8922 0 V2
JS23784.mat 16x1+24 1000.0(0)/mV 16 0 181 317 0 V3
JS23784.mat 16x1+24 1000.0(0)/mV 16 0 -5 -11339 0 V4
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JS23784.mat 16x1+24 1000.0(0)/mV 16 0 -190 4216 0 V6
# Age: 71
# Sex: Male
# Dx: 427084000,55827005,55930002,427172004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown