However , other estimates regarding Pu releases point out that it may only be accurate within 3 - 4 orders of magnitude .
Accompanying text states that the associated Pu - 239 contamination levels are only accurate within two orders of magnitude .
Other estimates regarding Pu releases point out that it may only be accurate within 3 - 4 orders of magnitude .
Accompanying text states that the associated Pu - 239 contamination levels are only accurate within two orders of magnitude .