• each panel in the array of scatter plots is the projection of the Monte Carlo samples onto a plane corresponding to a pair of model parameters
• the center of the cloud is the maximum likelihood estimate (the "best" set of parameter values)
• the width of the cloud is the uncertainty in the parameter values
• each panel contains a 15,000 point subset of a 60,000-iteration Monte Carlo run, which required appx. 36 s of CPU time on a 150 MHz SGI Indy R4400 workstation