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

File: <base>/training/ptb-xl/g21/HR20974.hea (762 bytes) 
HR20974 12 500 5000
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -100 -21044 0 I
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 165 -8593 0 II
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 265 12422 0 III
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -33 14861 0 aVR
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -183 -16489 0 aVL
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 215 2063 0 aVF
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 25 3232 0 V1
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 275 -26415 0 V2
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 50 13667 0 V3
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -45 23798 0 V4
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -255 -13196 0 V5
HR20974.mat 16x1+24 1000.0(0)/mv 16 0 -160 1184 0 V6
# Age: 77
# Sex: Male
# Dx: 164865005,164951009,426783006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown