id reps type shape y
 1    1    A     X 3.77050093
 2    1    B     X 4.08531868
 3    1    C     X 3.64610341
 4    1    A     Y 2.78987255
 5    1    B     Y 3.06139595
 6    1    C     Y 1.75119692
 7    1    A     Z 3.01899630
 8    1    B     Z 3.73393396
 9    1    C     Z 1.97566602
10    2    A     X 4.90072412
11    2    B     X 4.63399537
12    2    C     X 3.38341777
13    2    A     Y 2.24586884
14    2    B     Y 3.81741645
15    2    C     Y 2.82071683
16    2    A     Z 1.98722357
17    2    B     Z 5.34324774
18    2    C     Z 1.19092014
19    3    A     X 2.38083813
20    3    B     X 4.00127115
21    3    C     X 2.15099182
22    3    A     Y 2.10518421
23    3    B     Y 1.78661181
24    3    C     Y 0.81920368
25    3    A     Z 1.32269066
26    3    B     Z 3.25121398
27    3    C     Z 0.08315428
28    4    A     X 4.27871827
29    4    B     X 5.34765405
30    4    C     X 4.53542114
31    4    A     Y 4.53063006
32    4    B     Y 4.58625891
33    4    C     Y 4.17512937
34    4    A     Z 3.69811835
35    4    B     Z 5.61966368
36    4    C     Z 2.04793785