Using Grid
as Neil suggested:
data = {m, alpha0, alpha1, beta0, beta1, gamma, delta0, delta1, delta2};
headerRow = {"m", "alpha0", "alpha1", "beta0", "beta1", "gamma", "delta0", "delta1", "delta2"};
headerAlignment = Table[{1, i} -> Center, {i, Length[headerRow]}];
textGrid = data // Map[NumberForm[#, {9, 5}] &, #, {2}] & // Transpose // Prepend[headerRow];
Grid[textGrid, Frame -> All, ItemStyle -> {{}, {1 -> Bold}},
Background -> {{}, {LightYellow, None}},
Alignment -> {Right, Automatic, headerAlignment}]
