Doran says "the percentage of gross hydrocarbon column which is...

Doran says "the percentage of gross hydrocarbon column which is represented as net reservoir sand in the well is at the high end of the 25% to 40% range ".

40% x 133 = 53.2

25% x 133 = 33.3

Since it will be at the "high end of the range" its fair to say that Banda will be upgraded up to 53.2m. I think Doran is saying this in a roundabout way to cirmcumvent the the 'cone of silence' which WPL has enforced.