% New QE fit:

isis> fit_counts;
 Parameters[Variable] = 3[3]
            Data bins = 2060
  Best fit chi-square = 1744
   Reduced chi-square = 0.848

isis> list_par;
wabs(1)*powerlaw(1)
 idx  param          tie-to  freeze         value          min          max
  1  wabs[1].NH_22       0     0        0.01230491            0            1
  2  powerlaw[1].norm    0     0        0.02296741            0            1
  3  powerlaw[1].alpha   0     0         -1.718404          -10            0

isis> conf(1,1);  % 90% limits
0.0134436
0.011494

isis> conf(2,1)(2,1);
0.0231878
0.022773

isis> conf(3,1);
-1.70709
-1.73111





% Old QE fit:

isis> fit_counts;
 Parameters[Variable] = 3[3]
            Data bins = 2060
  Best fit chi-square = 1389
   Reduced chi-square = 0.6752

isis> list_par;

wabs(1)*powerlaw(1)
 idx  param          tie-to  freeze         value          min          max
  1  wabs[1].NH_22       0     0        0.01238499            0            1
  2  powerlaw[1].norm    0     0        0.02200437            0            1
  3  powerlaw[1].alpha   0     0         -1.662157          -10            0

isis> conf(1,1);  % 90% limits
0.0134581
0.0113228

isis> conf(2,1);
0.0222007
0.0218083

isis> conf(3,1);
-1.65073
-1.67333