List of 2 data.frames:
$ data: 130 subjects with 7 variables. X1 to X6 correspond to the 6 measurements obtained on the 130 subjects:
ID: num [1:130]
X1: num [1:130]
X2: num [1:130]
X3: num [1:130]
X4: num [1:130]
X5: num [1:130]
X6: num [1:130]
$ time: 130 subjects with 7 variables. time1 to time6 correspond to the measurement times for the vairbales X1 to X6:
ID : num [1:130]
time1: num [1:130]
time2: num [1:130]
time3: num [1:130]
time4: num [1:130]
time5: num [1:130]
time6: num [1:130]