acceleration measurements: Sorted in subfolders labelled with the surface type. File format: .csv (comma separated values) first column: "time" - timestamp with date and time - dd.mm.yyyy hh:mm second column: "x" - acceleration in direction of x-axis in m/s² using dots (.) as decimal separator third column: "y" - acceleration in direction of y-axis in m/s² using dots (.) as decimal separator fourth column: "z" - acceleration in direction of z-axis in m/s² using dots (.) as decimal separator speed measurements: One single Windows Excel file with one spreadsheet per surface type. File format: .xlsx first column: e.g. "Mariahilfer Straße 48°11'49.1""N 16°20'42.7""E" - name of measurement position with latitude and longitude coordinates second column: "headwind" - Yes (Y) if the rider was moving against the wind; otherwise No (N) third column: "riding velocity v" - measured velocity in km/h using comma (,) as decimal separator fourth column: "wind velocity v_w" - measured in m/s using comma (,) as decimal separator fifth column: "headwind velocity" - wind velocity with proper sign, depending on the content of the second column (headwind yes or no) in km/h using comma (,) as decimal separator survey: Contains one .pdf file with the survey questions in German, one .csv and one .xlsx file with survey results (output from www.umfrageonline.com). The .csv and the .xlsx file contain the same information. first column: "_Anwort-ID" - internal ID used by www.umfrageonline.com second column: "Resume-Code" - internal ID used by www.umfrageonline.com third column: "Start" - Starting time for each individual participant fourth column: "Datum und Zeit" - date and time fifth column: "Teilnahmestatus" - participation status with possible status being the following: participated and finished; participated, but not finished starting from the sixth column: survey questions (numbered) with answers below in rows or following in the column(s) next to the question (not numbered), depending on the question type.