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

File: <base>/training/ningbo/g9/JS18664.hea (760 bytes) 
JS18664 12 500 5000
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JS18664.mat 16x1+24 1000.0(0)/mV 16 0 -15 11391 0 aVR
JS18664.mat 16x1+24 1000.0(0)/mV 16 0 -10 8900 0 aVL
JS18664.mat 16x1+24 1000.0(0)/mV 16 0 20 -26294 0 aVF
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JS18664.mat 16x1+24 1000.0(0)/mV 16 0 -10 18722 0 V2
JS18664.mat 16x1+24 1000.0(0)/mV 16 0 -20 7376 0 V3
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JS18664.mat 16x1+24 1000.0(0)/mV 16 0 29 3048 0 V6
# Age: 81
# Sex: Female
# Dx: 713427006,47665007,55930002,164890007
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown