Posterior distributions from the GP modeling of the T8 APT ground-based photometry. The top panels of the corner plot show the probability density function of each fit parameter. The vertical dashed lines indicate the 16th, 50th, and the 84th percentiles of the samples. Contours are drawn to improve the visualization of the 2D histograms and indicate the 68.3%, 95.5%, and 99.7% confidence interval levels (i.e., 1σ, 2σ, and 3σ).