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

File: <base>/training/cpsc_2018/g4/A3121.hea (682 bytes) 
A3121 12 500 10000
A3121.mat 16x1+24 1000.0(0)/mV 16 0 322 -8 0 I
A3121.mat 16x1+24 1000.0(0)/mV 16 0 89 55 0 II
A3121.mat 16x1+24 1000.0(0)/mV 16 0 -233 20 0 III
A3121.mat 16x1+24 1000.0(0)/mV 16 0 -206 -49 0 aVR
A3121.mat 16x1+24 1000.0(0)/mV 16 0 278 42 0 aVL
A3121.mat 16x1+24 1000.0(0)/mV 16 0 -72 -78 0 aVF
A3121.mat 16x1+24 1000.0(0)/mV 16 0 45 -14 0 V1
A3121.mat 16x1+24 1000.0(0)/mV 16 0 226 33 0 V2
A3121.mat 16x1+24 1000.0(0)/mV 16 0 172 122 0 V3
A3121.mat 16x1+24 1000.0(0)/mV 16 0 89 75 0 V4
A3121.mat 16x1+24 1000.0(0)/mV 16 0 40 24 0 V5
A3121.mat 16x1+24 1000.0(0)/mV 16 0 12 -18 0 V6
# Age: 64
# Sex: Female
# Dx: 429622005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown