Banda to be upgraded. Up to 53m oil column!!!!, page-4

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.