The data were extracted from MotifDb package (v 1.34.0) and grouped by motifStack package (v 1.37.2). The data were packaged as PFMatrixList object by TFBSTools (v 1.30.0)
data(motifs)
a list of PFMatrixList. The names of the list is the grouop distance.
MotifDb package. Source code for the data generation is in extdata folder