%%%--------------------------MODEL DESCRIPTION--------------------------%%%
Simple one component, 3D normal diffusion FCS model.
Diffusion time is fitted, no focus size information
One exponential bleaching component.

|gamma|*|N|*|Bleaching amplitude|*|Bleaching time|*|xy diffusion|*|z diffusion|+|Offset|    
%%%-------------------------PARAMETER DEFINITION------------------------%%%
Param(1): N             = 1;	LB = 0;     UB = Inf;
Param(2): tauD[&mu;s]      = 30;	LB = 0;     UB = Inf;
Param(3): p             = 5;	LB = 0;     UB = Inf;
Param(4): tauB[&mu;s]      = 1;    LB = 0;     UB = Inf;
Param(5): A(B)          = 0.01; LB = 0;     UB = 1;
Param(6): y0            = 0;     LB = -1;    UB = 1;
%%%------------------------BRIGHTNESS DEFINITION------------------------%%%
B=1/P(1); 
%%%-----------------------------FIT FUNCTION----------------------------%%%  
OUT=(1/sqrt(8))*1/P(1)*(1-P(5)+P(5)*exp(-x/P(4)/1e-6)).*(1./(1+x/(P(2)*1e-6))).*(1./sqrt(1+(1/P(3)^2)*x/(P(2)*1e-6)))+P(6);