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Figure 1: The Transit Analysis Package (TAP) Graphical User Interface while executing a Markov Chain Monte Carlo analysis on three light curves of WASP-10b (Section 3.1). The main background widget freezes during MCMC calculation as a new smaller widget is spawned in the foreground. The MCMC widget provides updates on the status of the analysis process while plotting every tenth model state with a blue analytic model and red curve representing the model and red noise. The top and bottom progress bars represent the current chain and overall completeness, respectively. During MCMC execution, the window in the main widget cycles through the currently explored probability density distributions for different parameters so that a user may monitor the progress of the analysis.