STMBJ data for ferrocene/ferrocenium derivatives 1-TA, 1-TA[PF6], 2-DMBT, and 2-DMBT[PF6] at different biases are stored in STMBJ_1-TA.zip, STMBJ_1-TA[PF6].zip, STMBJ_2-DMBT.zip, STMBJ_2-DMBT[PF6].zip, respectively. STMBJ data for the 2-DMBT[PF6] compound, recorded while switching the bias between 0.2 V and 0.6 V, are stored in BiasSwitch_2DMBT[PF6].zip. All STMBJ data were collected at 10 nm/s and 20 kSa/s. The raw data in each file have three columns: tip displacement || bias || conductance. The data are stored in plain ASCII format, can be opened with any kind of data analysis software. Labview VIs.zip contains LabVIEW VIs for data processing.