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

File: <base>/training/chapman_shaoxing/g1/JS00721.hea (726 bytes) 
JS00721 12 500 5000
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 -44 433 0 I
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 24 12487 0 II
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 68 12063 0 III
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 10 -348 0 aVR
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 -59 -11990 0 aVL
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 44 6130 0 aVF
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 54 8351 0 V1
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 29 17225 0 V2
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 5 21606 0 V3
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 15 21714 0 V4
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 24 18509 0 V5
JS00721.mat 16x1+24 1000.0(0)/mV 16 0 24 19585 0 V6
# Age: 53
# Sex: Female
# Dx: 426177001
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown