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

File: <base>/training/ningbo/g2/JS12453.hea (754 bytes) 
JS12453 12 500 5000
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JS12453.mat 16x1+24 1000.0(0)/mV 16 0 20 911 0 III
JS12453.mat 16x1+24 1000.0(0)/mV 16 0 -15 7769 0 aVR
JS12453.mat 16x1+24 1000.0(0)/mV 16 0 -10 -7855 0 aVL
JS12453.mat 16x1+24 1000.0(0)/mV 16 0 20 -6087 0 aVF
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JS12453.mat 16x1+24 1000.0(0)/mV 16 0 -20 -6235 0 V2
JS12453.mat 16x1+24 1000.0(0)/mV 16 0 20 -7795 0 V3
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JS12453.mat 16x1+24 1000.0(0)/mV 16 0 44 2220 0 V6
# Age: 89
# Sex: Male
# Dx: 164890007,164934002,59931005,195042002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown