each 3 columns relate to the following parameters
column 1: Tdet (fundamental period of deteriorate system)
column 2: kdet/ko (ratio between deteriorated and initial stiffness)
column 3: uy_det/uy_o (ratio between yield displacement of deteriorated and initial system)

each 3-column block corresponds to one initial ductility: 1, 2, 3, 4, 5, 6
each 25-row block corresponds to one load-case (earthquake record) and all records (40) were divided in 4 batches
each 25 rows provide the data above for the initial fundamental period To with the reange covering [To=0.2 - To=5s]