The space shuttle dendritic growth data for high-purity succinonitrile (SCN) are reinterpreted here in terms of the model proposed earlier by the present author. Unlike other recent growth models that have been used to rationalize the SCN growth data, all of which include two adjustable parameters, the present model includes only one unknown parameter, lambda(t). It has been shown that lambda(t) = 1/Nu, the reciprocal of the "local" value of the heat transfer Nusselt number at the dendrite tip. Thus lambda(t) may also be interpreted as a measure of the heat flux generated by the dendritic sidebranches. Estimates for lambda(t) based on the space shuttle dendritic growth data are provided. A comparison of this model with the solutions to the heat transfer problem for simple geometric shapes, such as a slowly growing sphere (lambda(t) = 1), the Fisher solution for a cylindrical body with a hemispherical tip (lambda(t) = 1/2), and the Ivantsov paraboloid, lambda(t) = (phi(t)/2p(t)), suggest that lambda(t) can be bounded between the values of 1/2 less than or equal to ht less than or equal to phi(t)/2p(t).