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

File: <base>/training/ptb-xl/g15/HR14721.hea (768 bytes) 
HR14721 12 500 5000
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 175 -21908 0 I
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -70 -31176 0 II
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -245 -9224 0 III
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -52 26818 0 aVR
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 210 -5686 0 aVL
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -157 -19555 0 aVF
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 60 12321 0 V1
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -160 32432 0 V2
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 50 -7801 0 V3
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -90 -20421 0 V4
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -50 96 0 V5
HR14721.mat 16x1+24 1000.0(0)/mv 16 0 -250 -19738 0 V6
# Age: 77
# Sex: Male
# Dx: 164909002,426783006,67741000119109
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown