Cathar
Would concur that your observations are inconsistent with the data.
Would further agree that your cbservations are more akin to the behaviour I would expect from the block you describe. The 2.4mm Slot,19sq mm guess on this old graph shows the behaviour I would predict.
First posted on OC Aus (Search on OC Aus is disabled so cannot find link)
Since87
Judging by the discrepancies with Cathar's findings I,perhaps, was a litlle hasty saying ok.
Roscal
All ponts valid.
Yes more testing details are required