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

File: <base>/training/ningbo/g11/JS20680.hea (757 bytes) 
JS20680 12 500 5000
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JS20680.mat 16x1+24 1000.0(0)/mV 16 0 -78 -22919 0 V6
# Age: 73
# Sex: Male
# Dx: 284470004,427084000,445118002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown