Derive relation between sets

Hi,

I have few sets of data as below. I want to generate equation which solves almost all of these. Can you please guide?

61  43.5  36.5  30  51.5  34.5  20.5
60  43.5  36  30.5  50  35  22
59.5  43.5  36.5  30  49.5  34  22.5
59.5  41.5  34.5  27  45.5  38.5  30.5
59  44  37.5  35  45.5  36.5  20
59  44  38  31  41.5  36  20
59  39.5  36.5  28.5  49  41.5  26
58  40.5  37  30.5  48  36  20
59  44  37  32  48.5  30.5  20
58.5  43.5  36.5  31  41  35.5  23.5
58.5  43.5  36.5  30  44  38  22.5
57  40.5  37.5  31.5  47  31  20
57.5  40.5  37  31.5  48  35.5  23.5
57  40.5  37  30.5  48  32  20.5
57  41  33.5  30  47.5  40  21
58.5  43.5  37  31  48  33  22
58.5  40  37.5  30.5  48  34.5  21.5
58.5  40  38  30  46  40.5  27
58.5  40  37.5  29.5  46  39.5  26.5
58.5  41  35.5  28.5  48  38.5  26
58.5  43.5  36  30.5  49.5  35.5  22

[José-Luis]

I don't get it. What do you mean?

[Matt Fig]

What do you mean, "solves these"?? Solves what? I don't see any unknowns, just numbers. That is not an equation or system of equations. You need to be clear on what you want and show us exactly what is going on with your problem.