- SubjectId - Id of volunteer.
- Activity - Activity type of measurements. Available values are in activity_labels.txt file.
Other colums are from raw data and their description is in features_info.txt file:
3:8. tBodyAcc-std()-XYZ and tBodyAcc-mean()-XYZ - Average of mean and standart deviation values by each axis of the normalized body acceleration signal obtained by subtracting the gravity from the total acceleration. 9:14. tGravityAcc-std()-XYZ and tGravityAcc-mean()-XYZ - Average of mean and standart deviation values by each axis of the normalized gravity component signal. 15:20. tBodyAccJerk-std()-XYZ and tBodyAccJerk-mean()-XYZ - Average of mean and standart deviation values by each axis of the normalized body linear acceleration Jerk signal. 21:26. tBodyGyro-std()-XYZ and tBodyGyro-mean()-XYZ - Average of mean and standart deviation values by each axis of the normalized angular velocity signal. 27:32. tBodyGyroJerk-std()-XYZ and tBodyGyroJerk-mean()-XYZ - Average of mean and standart deviation values by each axis of the normalized angular velocity Jerk signal. 33:34. tBodyAccMag-mean() and tBodyAccMag-std() - Average of mean and standart deviation values of the normalized magnitude of the body acceleration signal. 35:36. tGravityAccMag-mean() and tGravityAccMag-std() - Average of mean and standart deviation values of the normalized magnityde of the gravity component signal. 37:38.