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Model: SLogistic2
Equation: y = a/(1 + ((a-y0)/y0)*exp(-4*Wmax*x/a))
Weighting:
y        No weighting
  
Chi^2/DoF        = 7.06928
R^2        =  0.91206
  
y0        8.28488        2.14842
a        30.49469        1.88924
Wmax        3.53462        0.94366
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