Brackets for roots of BESSJ0:


                lower     upper        F(lower)  F(upper)

 Root  1        1.9800    2.4700        0.2354   -0.0334
 Root  2        5.4100    5.9000       -0.0378    0.1220
 Root  3        8.3500    8.8400        0.0826   -0.0497
 Root  4       11.7800   12.2700       -0.0027    0.1049
 Root  5       14.7200   15.2100        0.0436   -0.0564
 Root  6       17.6600   18.1500       -0.0759    0.0148
 Root  7       21.0900   21.5800        0.0211   -0.0619
 Root  8       24.0300   24.5200       -0.0516    0.0269
 Root  9       27.4600   27.9500        0.0051   -0.0665
 Root 10       30.4000   30.8900       -0.0336    0.0363
 Root 11       33.3400   33.8300        0.0583   -0.0074
 Root 12       36.7700   37.2600       -0.0193    0.0440
 Root 13       39.7100   40.2000        0.0432   -0.0178
 Root 14       43.1400   43.6300       -0.0073    0.0504
 Root 15       46.0800   46.5700        0.0303   -0.0265
 Root 16       49.0200   49.5100       -0.0509    0.0031