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

File: <base>/training/ptb-xl/g3/HR02564.hea (751 bytes) 
HR02564 12 500 5000
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HR02564.mat 16x1+24 1000.0(0)/mv 16 0 15 3613 0 II
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HR02564.mat 16x1+24 1000.0(0)/mv 16 0 -47 -283 0 aVF
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HR02564.mat 16x1+24 1000.0(0)/mv 16 0 250 16960 0 V5
HR02564.mat 16x1+24 1000.0(0)/mv 16 0 285 -14745 0 V6
# Age: 59
# Sex: Female
# Dx: 164934002,426783006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown