$hessian                                                                        
        0.3400592790  -0.0037244166  -0.2692246463  -0.2949757808  -0.0843710516
        0.2071279624  -0.0450834982   0.0880954681   0.0620966839
       -0.0037244166   0.4178159601   0.1288706469  -0.0527332429  -0.0538503938
        0.0253436842   0.0564576595  -0.3639655663  -0.1542143310
       -0.2692246463   0.1288706469   0.2510992110   0.2166639457   0.0502868702
       -0.1556604127   0.0525607005  -0.1791575171  -0.0954387983
       -0.2949757808  -0.0527332429   0.2166639457   0.3048689954   0.0520985739
       -0.2246550328  -0.0098932146   0.0006346691   0.0079910871
       -0.0843710516  -0.0538503938   0.0502868702   0.0520985739   0.0475816537
       -0.0267327795   0.0322724777   0.0062687400  -0.0235540907
        0.2071279624   0.0253436842  -0.1556604127  -0.2246550328  -0.0267327795
        0.1690600320   0.0175270705   0.0013890953  -0.0133996193
       -0.0450834982   0.0564576595   0.0525607005  -0.0098932146   0.0322724777
        0.0175270705   0.0549767127  -0.0887301372  -0.0700877710
        0.0880954681  -0.3639655663  -0.1791575171   0.0006346691   0.0062687400
        0.0013890953  -0.0887301372   0.3576968263   0.1777684217
        0.0620966839  -0.1542143310  -0.0954387983   0.0079910871  -0.0235540907
       -0.0133996193  -0.0700877710   0.1777684217   0.1088384175
