Table 2.

Data files naming convention of the ESP32 dataset.

Symbol	Abbreviation for	Range
E	Experiment for Scenario	{1, 2, 3}
S	Subject (Volunteer)	{1, 2, 3, …, 8}
A	Activity	{1, 2, 3, …, 10}
T	Trial	{1, 2, 3, …, 20}