=== Piecewise constant (stepwise changing) area function ===
position_cm  area_cm2  perimeter_cm  articulator
0  0.641164  2.88045  N
0.500965  0.641164  2.88045  N
0.500965  0.509398  2.56557  N
1.00193  0.509398  2.56557  N
1.00193  0.404683  2.34005  N
1.50289  0.404683  2.34005  N
1.50289  0.323538  2.18389  N
2.00386  0.323538  2.18389  N
2.00386  0.323448  2.20673  N
2.50482  0.323448  2.20673  N
2.50482  2.65683  7.27785  N
3.00579  2.65683  7.27785  N
3.00579  2.78019  7.22679  N
3.50675  2.78019  7.22679  N
3.50675  2.8156  8.85617  N
4.00772  2.8156  8.85617  N
4.00772  2.4373  8.89308  N
4.50868  2.4373  8.89308  N
4.50868  2.43147  7.83621  N
5.00965  2.43147  7.83621  N
5.00965  3.49486  7.64892  T
5.51061  3.49486  7.64892  T
5.51061  4.12185  7.99836  T
6.01158  4.12185  7.99836  T
6.01158  4.92553  8.58162  T
6.51254  4.92553  8.58162  T
6.51254  5.43482  8.97221  T
7.01351  5.43482  8.97221  T
7.01351  5.95455  9.37952  T
7.51447  5.95455  9.37952  T
7.51447  6.48664  9.87885  T
8.01544  6.48664  9.87885  T
8.01544  5.04537  8.93981  T
8.60731  5.04537  8.93981  T
8.60731  4.12535  8.45926  T
9.17506  4.12535  8.45926  T
9.17506  2.91927  7.23159  T
9.71972  2.91927  7.23159  T
9.71972  1.85643  5.55308  T
10.2424  1.85643  5.55308  T
10.2424  1.00555  4.32244  T
10.744  1.00555  4.32244  T
10.744  0.706372  3.84617  T
11.2257  0.706372  3.84617  T
11.2257  0.682836  3.82808  T
11.6886  0.682836  3.82808  T
11.6886  0.732419  3.99521  T
12.1336  0.732419  3.99521  T
12.1336  0.79379  4.01537  T
12.5618  0.79379  4.01537  T
12.5618  0.946132  4.21039  T
12.9742  0.946132  4.21039  T
12.9742  1.05953  4.30121  T
13.372  1.05953  4.30121  T
13.372  1.0617  4.71755  T
13.7562  1.0617  4.71755  T
13.7562  0.938634  4.28322  T
14.1277  0.938634  4.28322  T
14.1277  0.921699  4.26907  T
14.4878  0.921699  4.26907  T
14.4878  0.921155  4.56068  T
14.8373  0.921155  4.56068  T
14.8373  1.04351  4.96051  T
15.1774  1.04351  4.96051  T
15.1774  1.14817  5.07298  T
15.5091  1.14817  5.07298  T
15.5091  1.29918  5.44688  T
15.8334  1.29918  5.44688  T
15.8334  2.15798  6.67582  I
16.1515  2.15798  6.67582  I
16.1515  1.20964  4.97904  L
16.4643  1.20964  4.97904  L
16.4643  0.595652  3.41955  L
16.7729  0.595652  3.41955  L
16.7729  0.491025  2.99627  L
17.0784  0.491025  2.99627  L
17.0784  0.470307  2.9895  L
17.3818  0.470307  2.9895  L
17.3818  0.47394  3.3335  L
17.6841  0.47394  3.3335  L

