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

File: <base>/training/ningbo/g21/JS30866.hea (730 bytes) 
JS30866 12 500 5000
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JS30866.mat 16x1+24 1000.0(0)/mV 16 0 -83 4085 0 V6
# Age: 46
# Sex: Female
# Dx: 426177001
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown