On the accuracy of registrations of ascended and descended floors in iPhones

If you use these data in a publication, please cite

Jan Peter van Zandwijk, Kim Lensen, Abdul Boztas, Have you been upstairs? On the accuracy of registrations of ascended and descended floors in iPhones, Forensic Science International: Digital Investigation, Volume 47, December 2023, 301660.

CSV data column legend

Test subject - Code corresponding to test subject.
Telephone - Code corresponding to type of iPhone. Format: Type (iOS version).
Carrying location - Specification where phone was carried.
Date - Format YYYYMMDD.
Trial - Sequencenumber in measurement session.
Floor height - Specified in number of substairs of 1.20 m.
Speed - W=walking, R=running, WL=walking and elevator, RT = escalator, RTW = walking on escalator.
Pause - Yes=pause at end of this trial, No=no pause at end of this trial.
Measured # steps steps as measured by tally counter by test subject.
Floors healthdb_secure.sqlite - Number of floors by matching traces to experimental trial.
Floors cache_encryptedC.db - Number of floors by matching traces to experimental trial.
Measured number of floors - Number of floors of height specified in Floor height.

For floors, positive numbers indicate ascending and negative numbers indicate descending.