Data generating PMF update to double censored

```r
true_cdf <- data.frame(
  delay = 1:26,
  cdf = pdislnorm(1:26, 2, 0.5) / pdislnorm(26, 2, 0.5),
  Method = "Data generating"
)
```

It might be worth updating this to be the double censored representation so it is closer to the true data generating dist?