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

File: <base>/training/ningbo/g2/JS12071.hea (765 bytes) 
JS12071 12 500 5000
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JS12071.mat 16x1+24 1000.0(0)/mV 16 0 -73 -10091 0 aVF
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JS12071.mat 16x1+24 1000.0(0)/mV 16 0 -190 11475 0 V2
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JS12071.mat 16x1+24 1000.0(0)/mV 16 0 -234 195 0 V4
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JS12071.mat 16x1+24 1000.0(0)/mV 16 0 -166 1849 0 V6
# Age: 84
# Sex: Male
# Dx: 426177001,270492004,55827005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown