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

File: <base>/training/cpsc_2018/g2/A1421.hea (702 bytes) 
A1421 12 500 9500
A1421.mat 16x1+24 1000.0(0)/mV 16 0 16 -1801 0 I
A1421.mat 16x1+24 1000.0(0)/mV 16 0 41 -1917 0 II
A1421.mat 16x1+24 1000.0(0)/mV 16 0 25 -116 0 III
A1421.mat 16x1+24 1000.0(0)/mV 16 0 -29 -3529 0 aVR
A1421.mat 16x1+24 1000.0(0)/mV 16 0 -5 -4374 0 aVL
A1421.mat 16x1+24 1000.0(0)/mV 16 0 33 354 0 aVF
A1421.mat 16x1+24 1000.0(0)/mV 16 0 73 4174 0 V1
A1421.mat 16x1+24 1000.0(0)/mV 16 0 229 3678 0 V2
A1421.mat 16x1+24 1000.0(0)/mV 16 0 343 -4016 0 V3
A1421.mat 16x1+24 1000.0(0)/mV 16 0 251 3369 0 V4
A1421.mat 16x1+24 1000.0(0)/mV 16 0 227 -2344 0 V5
A1421.mat 16x1+24 1000.0(0)/mV 16 0 63 -2036 0 V6
# Age: 73
# Sex: Female
# Dx: 426783006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown