J = E[R] = 0.2040   Var(R) = 0.0399
irreducible MSE per position t=1..4 : [0.0399 0.0301 0.0201 0.0101]
critic MSE per position            : [0.0401 0.0305 0.0204 0.0104]
excess over irreducible            : [0.0002  0.00039 0.00029 0.00034]
RMS gap to exact V^pi per position : [0.014  0.0198 0.0171 0.0184]
explained variance 1 - MSE/Var(R)  : [-0.005  0.236  0.489  0.739]
