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

File: <base>/training/ptb-xl/g1/HR00255.hea (755 bytes) 
HR00255 12 500 5000
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -15 6846 0 I
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -70 -10462 0 II
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -55 -17303 0 III
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 43 1992 0 aVR
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 20 12290 0 aVL
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -62 -13643 0 aVF
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -10 -20293 0 V1
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -5 -14372 0 V2
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 5 9615 0 V3
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 20 573 0 V4
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 25 29788 0 V5
HR00255.mat 16x1+24 1000.0(0)/mv 16 0 -55 14686 0 V6
# Age: NaN
# Sex: Female
# Dx: 164884008,426783006,713426002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown