This folder contains additional data to the publication "On the influence of head motion on the swimming kinematics of robotic fish" by S. Abbaszadeh, S. Hoerner, Y.Kiiski and R. Leidhlod. The data is sorted as follows: 1) accuracy_force: All saved measurings for Measurement repeatability study shown in table.2. The number 1 to 7 corresponds to the number in table 2. 2) CAD_files_fishrobot: includes the step and stl data of the robotic fish and the measurement setup 3) figures: Includes the figures in der publication. In figure 10 only the Propulsion force for different amplitudes at a pivot point distance of 131.5~mm has been showed. For all other pivot point distances the diagramm could be find here as figure10_91mm to figure10_121mm 4) python: Includes Python scripts for communication with the Microcontroller and for evaluation and storage of the experimental data. 5) raw_data: Includes the raw experinet datas. Thiese datas has been sorted and analyzed in "sorted.csv" and "gesamtdiagram.csv". 6) 1N_KMD_calibration.ipynb: python code (jupyter notbook) for calibration of forceload. 7)Diagramme.ipynb: This code is used to create all the diagrams in the publication 8)gesamtdiagram.csv: The parameters of the maximum propulsion for each pivot point were extracted from these data to obtain a correlation of the studied parameters with the pivot point distance (K) in Figure 8. This file was retrieved for this purpose in "Diagramme.ipynb". 9) sorted.csv: The entire measurement results were imported into an scv file and sorted by head length. This file was retrieved in "Diagramme.ipynb" to provide the results of the evaluations as diagrams.