Example of different models yielding similar fits: left hand and center panels fits with two YSP models of ages 0.1 and 0.06 Gyr respectively; right hand panel fit with the power law model. The dotted lines represent an OSP model (at the longer wavelengths) and either a power law (right-hand panels) or two different YSP models (left hand and middle panels). The line through the data points is the sum of the two sub-components.