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

File: <base>/training/ningbo/g9/JS19264.hea (732 bytes) 
JS19264 12 500 5000
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JS19264.mat 16x1+24 1000.0(0)/mV 16 0 -29 6902 0 aVF
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JS19264.mat 16x1+24 1000.0(0)/mV 16 0 -20 -844 0 V2
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JS19264.mat 16x1+24 1000.0(0)/mV 16 0 -34 17805 0 V6
# Age: 85
# Sex: Female
# Dx: 164890007
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown