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

File: <base>/training/ningbo/g8/JS17736.hea (760 bytes) 
JS17736 12 500 5000
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JS17736.mat 16x1+24 1000.0(0)/mV 16 0 73 -110 0 V2
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JS17736.mat 16x1+24 1000.0(0)/mV 16 0 -268 -17037 0 V6
# Age: 84
# Sex: Male
# Dx: 164890007,55827005,55930002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown