only necessity holds (d_nec = 0.245, d_suf = 0) 
  n d_nec_declared d_suf_declared power_necessity power_sufficiency power_joint
 30          0.245              0           0.945             0.165       0.165
 60          0.245              0           1.000             0.215       0.215
 power_weakest_perm power_sum_perm
               0.21           0.88
               0.26           1.00

only sufficiency holds (d_nec = 0, d_suf = 0.245) 
  n d_nec_declared d_suf_declared power_necessity power_sufficiency power_joint
 30              0          0.245            0.23             0.955       0.225
 60              0          0.245            0.26             1.000       0.260
 power_weakest_perm power_sum_perm
              0.275          0.885
              0.300          0.995

