Here's the data table for the X1, X2, Y, Z problem above.
X1 X2
0.51157 84.176
14.647 24.882
4.9949 4.0489
7.2158 0.29246
1.1508 81.069
2.7168 3.9838
7.8424 9.524
39.898 11.588
1.9674 28.209
8.1035 3.9201
4.8543 26.696
2.3327 5.657
0.81413 8.3211
3.0353 30.83
17.358 10.146
9.0213 10.053
0.66707 8.3254
0.86752 33.926
8.9094 9.0339
1.1244 35.403
28.492 12.339
10.417 9.4515
2.0682 7.5408
46.191 7.7915
19.741 2.6288
15.957 87.025
16.158 23.398
5.0452 4.9929
13.013 23.599
16.154 1.523
41.816 7.7509
2.9198 51.987
8.0946 52.995
0.70621 88.573
7.6358 29.643
8.7072 13.223
1.6697 15.609
6.4407 7.0422
15.963 10.809
3.9729 13.498
1.766 51.996
39.302 32.877
3.8379 19.373
9.6895 25.716
1.8417 5.2044
6.8754 23.172
3.4324 8.9823
8.4655 0.27048
11.887 13.748
16.626 1.0743
16.428 3.7742
3.824 1.7208
11.948 43.593
6.1309 4.162
18.913 1.9244
3.5968 37.11
9.7187 42.055
1.5081 5.4187
1.5823 6.5201
5.2161 8.5653
7.0007 5.6467
1.0562 8.2147
1.9647 2.4774
4.3864 26.027
2.0092 17.377
4.1517 30.93
10.73 66.708
12.388 50.226
10.753 3.237
6.2721 21.564
3.1867 15.265
11.735 1.8037
1.7615 29.518
5.6551 2.969
9.9314 8.413
3.5277 2.3041
6.0409 14.343
8.0995 0.14763
3.6447 19.706
4.7592 12.646
2.2964 34.15
0.44115 13.785
6.4896 17.246
1.2767 8.2974
17.547 7.9008
0.20461 0.87214
13.04 33.019
13.77 43.926
1.3268 11.417
3.0475 0.62638
19.913 74.809
44.433 2.7803
1.1216 72.33
16.138 13.097
12.082 32.975
4.1333 6.6902
12.573 27.672
7.5667 1.3685
27.367 39.728
0.11734 13.016
5.3993 2.2141
8.5921 1.1868
6.626 21.868
10.968 16.54
8.3723 15.051
14.874 38.035
5.4506 39.922
2.7396 12.604
6.3521 6.4099
4.4546 18.391
15.651 20.521
9.6806 25.086
2.442 2.8166
3.8442 9.3549
7.7415 28.445
5.6594 0.44324
2.3041 8.9101
28.271 29.407
5.0606 7.674
29.904 8.1346
8.7857 40.091
11.874 75.891
1.3425 26.773
41.991 42.995
2.6403 53.381
0.29589 3.1815
0.099669 34.259
2.3716 68.58
8.2403 6.1869
6.9653 12.453
15.42 25.745
4.4085 19.969
11.393 87.032
0.40719 2.3485
3.1934 2.8769
8.8685 27.389
2.9495 11.261
13.17 36.744
8.2115 10.405
0.68943 22.107
3.8077 8.3524
15.485 2.9321
1.7526 11.326
4.6397 0.39423
20.116 4.6681
15.744 37.6
4.989 3.6538
4.6221 33.019
9.9296 8.9574
5.5313 8.0394
7.9535 5.1731
31.259 19.361
36.051 16.348
11.626 14.552
43.534 9.9481
9.572 34.746
3.8109 124.04
23.769 4.7088
33.428 13.326
4.9038 30.908
4.9669 45.373
41.503 36.987
41.132 17.954
16.603 17.942
5.3287 58.866
28.546 1.1989
10.008 37.946
4.5973 19.123
3.318 23.355
3.672 35.612
24.76 2.1818
7.8888 22.619
8.1683 6.185
10.406 17.788
18.734 18.336
3.9209 13.643
3.578 35.521
3.1813 12.897
7.3734 8.8882
5.8907 82.458
21.116 3.5622
7.9683 4.3765
3.3424 7.1969
1.1335 15.449
12.979 49.872
13.674 3.9515
1.4433 32.899
14.595 16.178
2.1707 86.921
0.96073 23.505
14.615 2.6626
14.3 3.6003
30.007 21.987
25.461 2.5406
4.4501 14.692
16.561 11.567
1.6976 9.6931
17.493 8.2528
17.673 9.6696
0.057208 7.5626
8.2146 13.461
10.787 6.7385
11.577 13.264
10.076 10.022
9.3334 0.67729
5.2505 3.9174
21.224 22.93
32.668 10.631
7.7958 40.773
1.3941 27.381
0.68026 4.3872
13.301 8.074
18.307 85.915
1.3599 11.54
14.36 15.768
4.3722 1.9975
0.33673 25.306
4.0807 54.657
1.3882 14.822
46.125 0.32844
19.877 1.6166
1.9997 11.554
8.4358 8.5443
1.1617 5.1578
3.0801 44.853
3.7495 136.74
10.61 12.259
17.956 99.647
18.604 15.911
16.549 32.627
8.6168 4.7869
1.5551 9.6071
7.1284 83.311
2.0342 2.3115
7.7486 5.444
7.823 1.9515
7.9698 5.5264
8.862 19.313
1.0357 22.106
51.879 13.7
12.127 11.434
30.126 5.3002
3.6646 4.9726
4.3062 14.509
0.17159 4.4076
5.9299 15.057
9.1611 31.915
16.155 10.908
4.6968 8.1143
3.1011 7.8086
9.7847 1.1841
46.176 5.2234
8.6784 6.0924
2.828 2.8714
2.3083 0.18186
0.83428 13.706
1.6875 9.2698
10.003 4.6485
4.7674 16.03
3.1296 12.912
16.404 35.267
1.0003 40.702
5.6351 30.394
4.592 44.985
14.507 39.12
6.0005 15.663
0.7087 4.7618
10.93 25.383
4.2231 29.852
9.3674 1.911
4.6631 98.319
3.5799 10.595
9.2336 12.245
8.8279 8.5075
4.2279 23.203
1.7723 29.293
9.8992 17.538
8.5507 24.16
5.1976 7.937
5.6962 1.2746
3.3332 21.392
6.7078 11.491
2.5309 42.591
7.1469 35.555
16.825 25.538
3.5577 11.71
0.17442 14.448
2.1488 0.97912
3.5159 29.227
7.2368 14.735
21.662 12.829
4.0819 4.6457
10.068 32.901
19.658 1.895
5.678 1.6199
1.9479 86.45
3.946 5.291
0.0055285 1.0819
0.39119 4.133
28.326 1.5845
10.208 32.289
6.0054 7.8824
13.403 1.5138
5.1526 21.353
30.103 10.401
5.6027 9.7068
3.5545 113.83
0.38441 0.36302
2.8699 2.118
3.0111 7.3415
8.3962 16.435
4.5529 7.1043
2.1937 9.8953
24.784 24.087
0.56081 3.1088
0.87802 43.772
5.0752 24.65
13.722 46.569
1.353 18.454
6.667 21.973
3.1109 1.1476
8.6221 3.5215
0.39396 27.063
26.303 62.979
5.9166 102.71
12.311 11.088
1.5319 5.9169
10.914 4.2928
3.8536 9.0018
29.291 27.624
10.31 38.714
6.9654 8.568
8.337 1.1084
5.7544 4.0696
4.835 1.4461
21.774 23.427
1.073 26.274
2.8163 12.456
2.343 36.246
2.0463 31.119
4.0047 30.574
16.051 8.5607
12.98 58.834
4.6803 29.455
6.2203 8.0864
28.217 23.364
24.195 23.642
13.045 6.5512
8.9386 0.93331
7.4646 40.63
0.95422 53.684
5.171 41.553
11.118 35.897
7.3774 1.8551
5.1555 39.864
18.236 9.6579
1.8696 26.262
0.44869 30.222
5.1827 6.7683
35.492 11.993
2.0811 1.2088
4.9411 22.181
3.5454 7.0057
23.838 1.1648
8.5593 10.84
9.7929 2.5532
17.948 5.764
1.8254 19.372
1.7597 6.4162
7.9493 36.305
0.44369 0.89567
19.163 32.569
1.3934 5.0671
2.621 9.7782
8.1157 36.369
4.7704 69.441
0.49517 24.852
4.4627 0.58725
13.97 1.0154
10.421 29.564
16.721 0.84717
7.1204 7.7174
8.9337 58.02
7.6889 10.222
4.9275 18.671
26.427 30.708
11.575 34.031
4.9695 51.343
17.429 98.062
4.7638 4.7453
14.026 80.585
5.3212 2.6035
6.8111 20.852
7.6619 6.5107
6.1356 0.64115
0.59403 37.201
10.736 36.286
9.1179 23.206
11.787 70.548
8.8778 20.565
12.52 72.098
9.3108 4.6218
6.8714 0.015391
3.2576 44.102
11.835 9.477
21.878 40.413
8.1353 23.422
7.6193 40.081
42.22 29.982
4.094 18.499
3.2288 40.028
12.671 28.454
13.401 1.5049
3.4465 18.776
2.4353 13.417
0.13939 47.525
7.4794 76.61
1.0223 36.71
7.9616 3.3798
2.1751 2.5759
1.877 33.534
17.941 0.17466
9.3164 6.7927
6.5247 2.7539
3.3111 14.695
5.6354 14.023
7.7478 24.928
8.0899 55.957
24.333 26.753
8.131 33.612
10.043 1.731
11.956 41.866
1.6035 86.182
2.7512 19.902
0.51547 7.1724
5.8351 2.3454
42.522 10.425
5.1722 37.07
2.0309 22.997
0.23174 29.1
15.055 95.538
3.5143 18.481
6.4997 8.6197
0.6946 49.302
3.3778 5.2582
14.782 0.61534
7.993 6.7151
17.591 4.919
0.31676 28.746
10.336 32.62
30.15 26.696
2.8059 6.7435
1.1114 0.4531
12.512 9.0159
13.815 12.106
0.69633 3.2961
20.327 4.4105
0.61004 8.0602
3.5403 7.9802
1.6526 3.9533
15.641 0.59945
7.8726 14.393
25.124 4.0309
1.612 8.8767
5.7617 23.661
11.416 8.2821
9.811 20.543
1.418 1.2759
9.8839 14.362
26.079 47.94
16.102 7.8954
30.059 13.276
5.6791 30.139
21.044 6.4314
6.4987 53.693
21.451 0.7307
2.6147 31.437
9.8068 36.512
1.9433 8.9814
30.654 167.71
5.1431 21.835
0.52188 25.812
12.42 62.233
1.1785 47.311
22.869 17.832
27.285 4.045
14.512 2.7734
0.69245 75.836
27.626 6.3717
13.31 3.2973
0.0046844 6.3326
15.512 0.91881
6.9633 8.4212
12.362 5.9599
3.9637 21.286
0.42917 2.4655
2.6585 21.155
4.0628 56.443
20.33 6.6142
23.495 0.85368