Fit Results (Custom Function)

$\displaystyle A*atan(B*x+C)+D$
PARAMETER         NOTE                                 VALUE             ERROR            
A                 --                                  1.8890371825e+09  2.1313385572e+12  
B                 --                                  3.6846381350e+07  4.0123291638e+10  
C                 --                                  1.2849802945e+09  2.0002541825e+12  
D                 --                                  -2.9672923933e+09 3.3478987768e+12  

Reduced Chi-Squared = 1564.10





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