Copy the following data:
c = sky(256);
for i=1:height(c)
fprintf("%9.6f %9.6f %9.6f\n", c(i, :))
end
0.900000 0.944700 0.974100
0.896471 0.942748 0.973186
0.892941 0.940796 0.972272
0.889412 0.938845 0.971358
0.885882 0.936893 0.970444
0.882353 0.934941 0.969529
0.878824 0.932989 0.968615
0.875294 0.931038 0.967701
0.871765 0.929086 0.966787
0.868235 0.927134 0.965873
0.864706 0.925182 0.964959
0.861176 0.923231 0.964045
0.857647 0.921279 0.963131
0.854118 0.919327 0.962216
0.850588 0.917375 0.961302
0.847059 0.915424 0.960388
0.843529 0.913472 0.959474
0.840000 0.911520 0.958560
0.836471 0.909568 0.957646
0.832941 0.907616 0.956732
0.829412 0.905665 0.955818
0.825882 0.903713 0.954904
0.822353 0.901761 0.953989
0.818824 0.899809 0.953075
0.815294 0.897858 0.952161
0.811765 0.895906 0.951247
0.808235 0.893954 0.950333
0.804706 0.892002 0.949419
0.801176 0.890051 0.948505
0.797647 0.888099 0.947591
0.794118 0.886147 0.946676
0.790588 0.884195 0.945762
0.787059 0.882244 0.944848
0.783529 0.880292 0.943934
0.780000 0.878340 0.943020
0.776471 0.876388 0.942106
0.772941 0.874436 0.941192
0.769412 0.872485 0.940278
0.765882 0.870533 0.939364
0.762353 0.868581 0.938449
0.758824 0.866629 0.937535
0.755294 0.864678 0.936621
0.751765 0.862726 0.935707
0.748235 0.860774 0.934793
0.744706 0.858822 0.933879
0.741176 0.856871 0.932965
0.737647 0.854919 0.932051
0.734118 0.852967 0.931136
0.730588 0.851015 0.930222
0.727059 0.849064 0.929308
0.723529 0.847112 0.928394
0.720000 0.845160 0.927480
0.716471 0.843208 0.926566
0.712941 0.841256 0.925652
0.709412 0.839305 0.924738
0.705882 0.837353 0.923824
0.702353 0.835401 0.922909
0.698824 0.833449 0.921995
0.695294 0.831498 0.921081
0.691765 0.829546 0.920167
0.688235 0.827594 0.919253
0.684706 0.825642 0.918339
0.681176 0.823691 0.917425
0.677647 0.821739 0.916511
0.674118 0.819787 0.915596
0.670588 0.817835 0.914682
0.667059 0.815884 0.913768
0.663529 0.813932 0.912854
0.660000 0.811980 0.911940
0.656471 0.810028 0.911026
0.652941 0.808076 0.910112
0.649412 0.806125 0.909198
0.645882 0.804173 0.908284
0.642353 0.802221 0.907369
0.638824 0.800269 0.906455
0.635294 0.798318 0.905541
0.631765 0.796366 0.904627
0.628235 0.794414 0.903713
0.624706 0.792462 0.902799
0.621176 0.790511 0.901885
0.617647 0.788559 0.900971
0.614118 0.786607 0.900056
0.610588 0.784655 0.899142
0.607059 0.782704 0.898228
0.603529 0.780752 0.897314
0.600000 0.778800 0.896400
0.596471 0.776848 0.895486
0.592941 0.774896 0.894572
0.589412 0.772945 0.893658
0.585882 0.770993 0.892744
0.582353 0.769041 0.891829
0.578824 0.767089 0.890915
0.575294 0.765138 0.890001
0.571765 0.763186 0.889087
0.568235 0.761234 0.888173
0.564706 0.759282 0.887259
0.561176 0.757331 0.886345
0.557647 0.755379 0.885431
0.554118 0.753427 0.884516
0.550588 0.751475 0.883602
0.547059 0.749524 0.882688
0.543529 0.747572 0.881774
0.540000 0.745620 0.880860
0.536471 0.743668 0.879946
0.532941 0.741716 0.879032
0.529412 0.739765 0.878118
0.525882 0.737813 0.877204
0.522353 0.735861 0.876289
0.518824 0.733909 0.875375
0.515294 0.731958 0.874461
0.511765 0.730006 0.873547
0.508235 0.728054 0.872633
0.504706 0.726102 0.871719
0.501176 0.724151 0.870805
0.497647 0.722199 0.869891
0.494118 0.720247 0.868976
0.490588 0.718295 0.868062
0.487059 0.716344 0.867148
0.483529 0.714392 0.866234
0.480000 0.712440 0.865320
0.476471 0.710488 0.864406
0.472941 0.708536 0.863492
0.469412 0.706585 0.862578
0.465882 0.704633 0.861664
0.462353 0.702681 0.860749
0.458824 0.700729 0.859835
0.455294 0.698778 0.858921
0.451765 0.696826 0.858007
0.448235 0.694874 0.857093
0.444706 0.692922 0.856179
0.441176 0.690971 0.855265
0.437647 0.689019 0.854351
0.434118 0.687067 0.853436
0.430588 0.685115 0.852522
0.427059 0.683164 0.851608
0.423529 0.681212 0.850694
0.420000 0.679260 0.849780
0.416471 0.677308 0.848866
0.412941 0.675356 0.847952
0.409412 0.673405 0.847038
0.405882 0.671453 0.846124
0.402353 0.669501 0.845209
0.398824 0.667549 0.844295
0.395294 0.665598 0.843381
0.391765 0.663646 0.842467
0.388235 0.661694 0.841553
0.384706 0.659742 0.840639
0.381176 0.657791 0.839725
0.377647 0.655839 0.838811
0.374118 0.653887 0.837896
0.370588 0.651935 0.836982
0.367059 0.649984 0.836068
0.363529 0.648032 0.835154
0.360000 0.646080 0.834240
0.356471 0.644128 0.833326
0.352941 0.642176 0.832412
0.349412 0.640225 0.831498
0.345882 0.638273 0.830584
0.342353 0.636321 0.829669
0.338824 0.634369 0.828755
0.335294 0.632418 0.827841
0.331765 0.630466 0.826927
0.328235 0.628514 0.826013
0.324706 0.626562 0.825099
0.321176 0.624611 0.824185
0.317647 0.622659 0.823271
0.314118 0.620707 0.822356
0.310588 0.618755 0.821442
0.307059 0.616804 0.820528
0.303529 0.614852 0.819614
0.300000 0.612900 0.818700
0.296471 0.610948 0.817786
0.292941 0.608996 0.816872
0.289412 0.607045 0.815958
0.285882 0.605093 0.815044
0.282353 0.603141 0.814129
0.278824 0.601189 0.813215
0.275294 0.599238 0.812301
0.271765 0.597286 0.811387
0.268235 0.595334 0.810473
0.264706 0.593382 0.809559
0.261176 0.591431 0.808645
0.257647 0.589479 0.807731
0.254118 0.587527 0.806816
0.250588 0.585575 0.805902
0.247059 0.583624 0.804988
0.243529 0.581672 0.804074
0.240000 0.579720 0.803160
0.236471 0.577768 0.802246
0.232941 0.575816 0.801332
0.229412 0.573865 0.800418
0.225882 0.571913 0.799504
0.222353 0.569961 0.798589
0.218824 0.568009 0.797675
0.215294 0.566058 0.796761
0.211765 0.564106 0.795847
0.208235 0.562154 0.794933
0.204706 0.560202 0.794019
0.201176 0.558251 0.793105
0.197647 0.556299 0.792191
0.194118 0.554347 0.791276
0.190588 0.552395 0.790362
0.187059 0.550444 0.789448
0.183529 0.548492 0.788534
0.180000 0.546540 0.787620
0.176471 0.544588 0.786706
0.172941 0.542636 0.785792
0.169412 0.540685 0.784878
0.165882 0.538733 0.783964
0.162353 0.536781 0.783049
0.158824 0.534829 0.782135
0.155294 0.532878 0.781221
0.151765 0.530926 0.780307
0.148235 0.528974 0.779393
0.144706 0.527022 0.778479
0.141176 0.525071 0.777565
0.137647 0.523119 0.776651
0.134118 0.521167 0.775736
0.130588 0.519215 0.774822
0.127059 0.517264 0.773908
0.123529 0.515312 0.772994
0.120000 0.513360 0.772080
0.116471 0.511408 0.771166
0.112941 0.509456 0.770252
0.109412 0.507505 0.769338
0.105882 0.505553 0.768424
0.102353 0.503601 0.767509
0.098824 0.501649 0.766595
0.095294 0.499698 0.765681
0.091765 0.497746 0.764767
0.088235 0.495794 0.763853
0.084706 0.493842 0.762939
0.081176 0.491891 0.762025
0.077647 0.489939 0.761111
0.074118 0.487987 0.760196
0.070588 0.486035 0.759282
0.067059 0.484084 0.758368
0.063529 0.482132 0.757454
0.060000 0.480180 0.756540
0.056471 0.478228 0.755626
0.052941 0.476276 0.754712
0.049412 0.474325 0.753798
0.045882 0.472373 0.752884
0.042353 0.470421 0.751969
0.038824 0.468469 0.751055
0.035294 0.466518 0.750141
0.031765 0.464566 0.749227
0.028235 0.462614 0.748313
0.024706 0.460662 0.747399
0.021176 0.458711 0.746485
0.017647 0.456759 0.745571
0.014118 0.454807 0.744656
0.010588 0.452855 0.743742
0.007059 0.450904 0.742828
0.003529 0.448952 0.741914
0.000000 0.447000 0.741000