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

File: <base>/training/ningbo/g11/JS21547.hea (755 bytes) 
JS21547 12 500 5000
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JS21547.mat 16x1+24 1000.0(0)/mV 16 0 224 11334 0 V2
JS21547.mat 16x1+24 1000.0(0)/mV 16 0 -303 31903 0 V3
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JS21547.mat 16x1+24 1000.0(0)/mV 16 0 -117 2120 0 V6
# Age: 61
# Sex: Male
# Dx: 426177001,713427006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown