This investigation ignores a key question: How many kg of ammonium nitrate was actually in the warehouse. Surely that's extremely important to the models. They only mention an mtv news report mentioning the stated figure of 2750t. That figure comes from the ship's documents. Yet there are estimates that suggest the actual explosion is only equivalent to 1000-1500t[0], or 700-1000t[1]. If the actual amount of nitrate…
Edit: The second link is probably misquoted and is also an estimation in terms of TNT. This is common; nuclear weapon yields are also stated in terms of TNT for example, despite not containing any.