### a,b,c are coded variables: a = (x1 -  8)/4;   b = (x2 - 24)/8;   c = (x3 - 14)/4;
x1 x2 x3 y
 4 16 10 113
12 16 10 756
 4 32 10  78
12 32 10 686
 4 16 18  87
12 16 18 788
 4 32 18 115
12 32 18 696
 4 16 10  99
12 16 10 739
 4 32 10  10
12 32 10 712
 4 16 18 159
12 16 18 776
 4 32 18 162
12 32 18 759
 8 24 14 351
 8 24 14 373
 8 24 14 353
 8 24 14 321
12 24 14 736.1
 4 24 14  96
 8 32 14 328.9
 8 16 14 303.5
 8 24 18 258.2
 8 24 10 347.7