It correspond to the average of each variable for each activity and each subject.
Variables:
[1] "subject_Id"
[2] "Id_Activity"
[3] "TimeDomain_BodyAcceleration_Mean_X"
[4] "TimeDomain_BodyAcceleration_Mean_Y"
[5] "TimeDomain_BodyAcceleration_Mean_Z"
[6] "TimeDomain_BodyAcceleration_StandardDeviation_X"
[7] "TimeDomain_BodyAcceleration_StandardDeviation_Y"
[8] "TimeDomain_BodyAcceleration_correlationY,Z"
[9] "TimeDomain_GravityAcceleration_Mean_X"
[10] "TimeDomain_GravityAcceleration_Mean_Y"
[11] "TimeDomain_GravityAcceleration_Mean_Z"
[12] "TimeDomain_GravityAcceleration_StandardDeviation_X"
[13] "TimeDomain_GravityAcceleration_StandardDeviation_Y"
[14] "TimeDomain_GravityAcceleration_correlationY,Z"
[15] "TimeDomain_BodyAcceleration_JerkMean_X"
[16] "TimeDomain_BodyAcceleration_JerkMean_Y"
[17] "TimeDomain_BodyAcceleration_JerkMean_Z"
[18] "TimeDomain_BodyAcceleration_JerkStandardDeviation_X"
[19] "TimeDomain_BodyAcceleration_JerkStandardDeviation_Y"
[20] "TimeDomain_BodyAcceleration_JerkcorrelationY,Z"
[21] "TimeDomain_BodyGyroscope_Mean_X"
[22] "TimeDomain_BodyGyroscope_Mean_Y"
[23] "TimeDomain_BodyGyroscope_Mean_Z"
[24] "TimeDomain_BodyGyroscope_StandardDeviation_X"
[25] "TimeDomain_BodyGyroscope_StandardDeviation_Y"
[26] "TimeDomain_BodyGyroscope_correlationY,Z"
[27] "TimeDomain_BodyGyroscope_JerkMean_X"
[28] "TimeDomain_BodyGyroscope_JerkMean_Y"
[29] "TimeDomain_BodyGyroscope_JerkMean_Z"
[30] "TimeDomain_BodyGyroscope_JerkStandardDeviation_X"
[31] "TimeDomain_BodyGyroscope_JerkStandardDeviation_Y"
[32] "TimeDomain_BodyGyroscope_JerkcorrelationY,Z"
[33] "TimeDomain_BodyAcceleration_Magnitude_Mean_"
[34] "TimeDomain_BodyAcceleration_Magnitude_arCoeff4"
[35] "TimeDomain_GravityAcceleration_Magnitude_Mean_"
[36] "TimeDomain_GravityAcceleration_Magnitude_arCoeff4"
[37] "TimeDomain_BodyAcceleration_JerkMagnitude_Mean_"
[38] "TimeDomain_BodyAcceleration_JerkMagnitude_arCoeff4"
[39] "TimeDomain_BodyGyroscope_Magnitude_Mean_"
[40] "TimeDomain_BodyGyroscope_Magnitude_arCoeff4"
[41] "TimeDomain_BodyGyroscope_JerkMagnitude_Mean_"
[42] "TimeDomain_BodyGyroscope_JerkMagnitude_arCoeff4"
[43] "FrequencyDomain_BodyAcceleration_Mean_X"
[44] "FrequencyDomain_BodyAcceleration_Mean_Y"
[45] "FrequencyDomain_BodyAcceleration_Mean_Z"
[46] "FrequencyDomain_BodyAcceleration_StandardDeviation_X"
[47] "FrequencyDomain_BodyAcceleration_StandardDeviation_Y"
[48] "FrequencyDomain_BodyAcceleration_bandsEnergy25,48"
[49] "FrequencyDomain_BodyAcceleration_JerkMean_X"
[50] "FrequencyDomain_BodyAcceleration_JerkMean_Y"
[51] "FrequencyDomain_BodyAcceleration_JerkMean_Z"
[52] "FrequencyDomain_BodyAcceleration_JerkStandardDeviation_X"
[53] "FrequencyDomain_BodyAcceleration_JerkStandardDeviation_Y"
[54] "FrequencyDomain_BodyAcceleration_JerkbandsEnergy25,48"
[55] "FrequencyDomain_BodyGyroscope_Mean_X"
[56] "FrequencyDomain_BodyGyroscope_Mean_Y"
[57] "FrequencyDomain_BodyGyroscope_Mean_Z"
[58] "FrequencyDomain_BodyGyroscope_StandardDeviation_X"
[59] "FrequencyDomain_BodyGyroscope_StandardDeviation_Y"
[60] "FrequencyDomain_BodyGyroscope_bandsEnergy25,48"
[61] "FrequencyDomain_BodyAcceleration_Magnitude_Mean_"
[62] "FrequencyDomain_BodyAcceleration_Magnitude_kurtosis"
[63] "FrequencyDomain_BodyBodyAcceleration_JerkMagnitude_Mean_"
[64] "FrequencyDomain_BodyBodyAcceleration_JerkMagnitude_kurtosis"
[65] "FrequencyDomain_BodyBodyGyroscope_Magnitude_Mean_"
[66] "FrequencyDomain_BodyBodyGyroscope_Magnitude_kurtosis"
[67] "FrequencyDomain_BodyBodyGyroscope_JerkMagnitude_Mean_"
[68] "angleZ,gravityMean"
[69] "Type_Activity"
Activities:
1 WALKING
2 WALKING_UPSTAIRS
3 WALKING_DOWNSTAIRS
4 SITTING
5 STANDING
6 LAYING