How to use the posterior predictive distribution for checking a model from PyMC

Nice! I got the plot and a p-value of 0.26. According to my previous habits on the p-values (as a former frequentist statistician…), it looks very bad. Would that also be your conclusion?
By the way, the plot contains an isolated point that I don’t know how to interpret. Would it be possible to know a little more?
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